# Table of nuclides (segmented, narrow)

The isotope tables given below show all of the known isotopes of the chemical elements, arranged with increasing atomic number from left to right and increasing neutron number from top to bottom.
Half lives are indicated by the color of each isotope's cell (see color chart in each section). Colored borders indicate half lives of the most stable nuclear isomer states.
The data for these tables came from Brookhaven National Laboratory which has an interactive Table of Nuclides with data on ~3000 nuclides.

## Isotopes for elements 0-14

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Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 0 | 1 | 2 | 3 |
| n ↓ | n | H | He | Li | 4 | 5 |
| 0 | | H | | | Be | B | 6 | 7 |
| 1 | n | H | He | Li | | | C | N | 8 |
| 2 | | H | He | Li | Be | B | C | N | O | 9 |
| 3 | | H | He | Li | Be | B | C | N | O | F | 10 |
| 4 | | H | He | Li | Be | B | C | N | O | F | Ne | 11 | 12 |
| | 5 | H | He | Li | Be | B | C | N | O | F | Ne | Na | Mg |
| | 6 | H | He | Li | Be | B | C | N | O | F | Ne | Na | Mg | 13 | 14 |
| | | 7 | He | Li | Be | B | C | N | O | F | Ne | Na | Mg | Al | Si |
| | | 8 | He | Li | Be | B | C | N | O | $^{17}$F | $^{18}$Ne | $^{19}$Na | $^{20}$Mg | $^{21}$Al | $^{22}$Si |
| | | | 9 | Li | Be | B | $^{15}$C | $^{16}$N | O | F | $^{19}$Ne | $^{20}$Na | $^{21}$Mg | $^{22}$Al | $^{23}$Si |
| | | | 10 | Li | Be | B | $^{16}$C | $^{17}$N | O | $^{19}$F | $^{20}$Ne | $^{21}$Na | $^{22}$Mg | $^{23}$Al | $^{24}$Si |
| | | | | 11 | Be | B | $^{17}$C | $^{18}$N | $^{19}$O | $^{20}$F | $^{21}$Ne | $^{22}$Na | $^{23}$Mg | $^{24}$Al | $^{25}$Si |
| | | | | 12 | Be | B | $^{18}$C | $^{19}$N | $^{20}$O | $^{21}$F | $^{22}$Ne | $^{23}$Na | $^{24}$Mg | $^{25}$Al | $^{26}$Si |
| | | | | | 13 | B | $^{19}$C | $^{20}$N | $^{21}$O | $^{22}$F | $^{23}$Ne | $^{24}$Na | $^{25}$Mg | Al | $^{27}$Si |
| | | | | | 14 | B | $^{20}$C | $^{21}$N | $^{22}$O | $^{23}$F | $^{24}$Ne | $^{25}$Na | $^{26}$Mg | $^{27}$Al | $^{28}$Si |
| | | | | | 15 | B | | $^{22}$N | $^{23}$O | $^{24}$F | $^{25}$Ne | $^{26}$Na | $^{27}$Mg | $^{28}$Al | $^{29}$Si |
| | | | | | 16 | B | $^{22}$C | $^{23}$N | $^{24}$O | $^{25}$F | $^{26}$Ne | $^{27}$Na | $^{28}$Mg | $^{29}$Al | $^{30}$Si |
| | | | | | | 17 | | | $^{25}$O | $^{26}$F | $^{27}$Ne | $^{28}$Na | $^{29}$Mg | $^{30}$Al | $^{31}$Si |
| | | | | | | | 18 | | $^{26}$O | $^{27}$F | $^{28}$Ne | $^{29}$Na | $^{30}$Mg | $^{31}$Al | $^{32}$Si |
| | | | | | | | | 19 | $^{27}$O | $^{28}$F | $^{29}$Ne | $^{30}$Na | $^{31}$Mg | $^{32}$Al | $^{33}$Si |
| | | | | | | | | 20 | $^{28}$O | $^{29}$F | $^{30}$Ne | $^{31}$Na | $^{32}$Mg | $^{33}$Al | $^{34}$Si |
| | | | | | | | | | 21 | $^{30}$F | $^{31}$Ne | $^{32}$Na | $^{33}$Mg | $^{34}$Al | $^{35}$Si |
| | | | | | | | | | 22 | $^{31}$F | $^{32}$Ne | $^{33}$Na | $^{34}$Mg | $^{35}$Al | $^{36}$Si |
| | | | | | | | | | | 23 | | $^{34}$Na | $^{35}$Mg | $^{36}$Al | $^{37}$Si |
| | | | | | | | | | | 24 | $^{34}$Ne | $^{35}$Na | $^{36}$Mg | $^{37}$Al | $^{38}$Si |
| | | | | | | | | | | | 25 | | $^{37}$Mg | $^{38}$Al | $^{39}$Si |
| | | | | | | | | | | | 26 | $^{37}$Na | $^{38}$Mg | $^{39}$Al | $^{40}$Si |
| | | | | | | | | | | | 27 | | | $^{40}$Al | $^{41}$Si |
| | | | | | | | | | | | 28 | $^{39}$Na | $^{40}$Mg | $^{41}$Al | $^{42}$Si |
| | 29 | | $^{42}$Al | $^{43}$Si |
| | | 30 | $^{43}$Al | $^{44}$Si |
| | | | 31 | |

## Isotopes for elements 15-29

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Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 15 |
| n ↓ | P | 16 |
| 9 | | S | 17 | 18 |
| 10 | | | Cl | Ar | 19 |
| 11 | $^{26}$P | $^{27}$S | $^{28}$Cl | $^{29}$Ar | K | 20 |
| 12 | $^{27}$P | $^{28}$S | $^{29}$Cl | $^{30}$Ar | $^{31}$K | Ca | 21 |
| 13 | $^{28}$P | $^{29}$S | $^{30}$Cl | $^{31}$Ar | | | Sc | 22 |
| 14 | $^{29}$P | $^{30}$S | $^{31}$Cl | $^{32}$Ar | $^{33}$K | | | Ti | 23 |
| 15 | $^{30}$P | $^{31}$S | $^{32}$Cl | $^{33}$Ar | $^{34}$K | $^{35}$Ca | | | V | 24 |
| 16 | $^{31}$P | $^{32}$S | $^{33}$Cl | $^{34}$Ar | $^{35}$K | $^{36}$Ca | $^{37}$Sc | | | Cr | 25 |
| 17 | $^{32}$P | $^{33}$S | $^{34}$Cl | $^{35}$Ar | $^{36}$K | $^{37}$Ca | $^{38}$Sc | $^{39}$Ti | | | Mn | 26 |
| 18 | $^{33}$P | $^{34}$S | $^{35}$Cl | $^{36}$Ar | $^{37}$K | $^{38}$Ca | $^{39}$Sc | $^{40}$Ti | | $^{42}$Cr | | Fe | 27 | 28 |
| 19 | $^{34}$P | $^{35}$S | Cl | $^{37}$Ar | $^{38}$K | $^{39}$Ca | $^{40}$Sc | $^{41}$Ti | | $^{43}$Cr | | $^{45}$Fe | Co | Ni |
| 20 | $^{35}$P | $^{36}$S | Cl | $^{38}$Ar | $^{39}$K | $^{40}$Ca | $^{41}$Sc | $^{42}$Ti | $^{43}$V | $^{44}$Cr | | $^{46}$Fe | | $^{48}$Ni |
| 21 | $^{36}$P | $^{37}$S | $^{38}$Cl | $^{39}$Ar | K | $^{41}$Ca | $^{42}$Sc | $^{43}$Ti | $^{44}$V | $^{45}$Cr | $^{46}$Mn | $^{47}$Fe | | $^{49}$Ni | 29 |
| 22 | $^{37}$P | $^{38}$S | $^{39}$Cl | $^{40}$Ar | $^{41}$K | $^{42}$Ca | $^{43}$Sc | $^{44}$Ti | $^{45}$V | $^{46}$Cr | $^{47}$Mn | $^{48}$Fe | | $^{50}$Ni | Cu |
| 23 | $^{38}$P | $^{39}$S | $^{40}$Cl | $^{41}$Ar | $^{42}$K | $^{43}$Ca | $^{44}$Sc | $^{45}$Ti | $^{46}$V | $^{47}$Cr | $^{48}$Mn | $^{49}$Fe | $^{50}$Co | $^{51}$Ni | |
| 24 | $^{39}$P | $^{40}$S | $^{41}$Cl | $^{42}$Ar | $^{43}$K | $^{44}$Ca | $^{45}$Sc | $^{46}$Ti | $^{47}$V | $^{48}$Cr | $^{49}$Mn | $^{50}$Fe | $^{51}$Co | $^{52}$Ni | |
| 25 | $^{40}$P | $^{41}$S | $^{42}$Cl | $^{43}$Ar | $^{44}$K | $^{45}$Ca | $^{46}$Sc | $^{47}$Ti | $^{48}$V | $^{49}$Cr | $^{50}$Mn | $^{51}$Fe | $^{52}$Co | $^{53}$Ni | |
| 26 | $^{41}$P | $^{42}$S | $^{43}$Cl | $^{44}$Ar | $^{45}$K | $^{46}$Ca | $^{47}$Sc | $^{48}$Ti | $^{49}$V | $^{50}$Cr | $^{51}$Mn | $^{52}$Fe | $^{53}$Co | $^{54}$Ni | $^{55}$Cu |
| 27 | $^{42}$P | $^{43}$S | $^{44}$Cl | $^{45}$Ar | $^{46}$K | $^{47}$Ca | $^{48}$Sc | $^{49}$Ti | $^{50}$V | $^{51}$Cr | $^{52}$Mn | $^{53}$Fe | $^{54}$Co | $^{55}$Ni | $^{56}$Cu |
| 28 | $^{43}$P | $^{44}$S | $^{45}$Cl | $^{46}$Ar | $^{47}$K | $^{48}$Ca | $^{49}$Sc | $^{50}$Ti | $^{51}$V | $^{52}$Cr | $^{53}$Mn | $^{54}$Fe | $^{55}$Co | $^{56}$Ni | $^{57}$Cu |
| 29 | $^{44}$P | $^{45}$S | $^{46}$Cl | $^{47}$Ar | $^{48}$K | $^{49}$Ca | $^{50}$Sc | $^{51}$Ti | $^{52}$V | $^{53}$Cr | $^{54}$Mn | $^{55}$Fe | $^{56}$Co | $^{57}$Ni | $^{58}$Cu |
| 30 | $^{45}$P | $^{46}$S | $^{47}$Cl | $^{48}$Ar | $^{49}$K | $^{50}$Ca | $^{51}$Sc | $^{52}$Ti | $^{53}$V | $^{54}$Cr | $^{55}$Mn | Fe | $^{57}$Co | $^{58}$Ni | $^{59}$Cu |
| 31 | $^{46}$P | $^{47}$S | $^{48}$Cl | $^{49}$Ar | $^{50}$K | $^{51}$Ca | $^{52}$Sc | $^{53}$Ti | $^{54}$V | $^{55}$Cr | $^{56}$Mn | $^{57}$Fe | $^{58}$Co | $^{59}$Ni | $^{60}$Cu |
| 32 | $^{47}$P | $^{48}$S | $^{49}$Cl | $^{50}$Ar | $^{51}$K | $^{52}$Ca | $^{53}$Sc | $^{54}$Ti | $^{55}$V | $^{56}$Cr | $^{57}$Mn | $^{58}$Fe | $^{59}$Co | $^{60}$Ni | $^{61}$Cu |
| | 33 | $^{49}$S | $^{50}$Cl | $^{51}$Ar | $^{52}$K | $^{53}$Ca | $^{54}$Sc | $^{55}$Ti | $^{56}$V | $^{57}$Cr | $^{58}$Mn | $^{59}$Fe | Co | $^{61}$Ni | $^{62}$Cu |
| | | 34 | $^{51}$Cl | $^{52}$Ar | $^{53}$K | $^{54}$Ca | $^{55}$Sc | $^{56}$Ti | $^{57}$V | $^{58}$Cr | $^{59}$Mn | $^{60}$Fe | $^{61}$Co | Ni | $^{63}$Cu |
| | | 35 | $^{52}$Cl | $^{53}$Ar | $^{54}$K | $^{55}$Ca | $^{56}$Sc | $^{57}$Ti | $^{58}$V | $^{59}$Cr | $^{60}$Mn | $^{61}$Fe | $^{62}$Co | $^{63}$Ni | $^{64}$Cu |
| | | | 36 | $^{54}$Ar | $^{55}$K | $^{56}$Ca | $^{57}$Sc | $^{58}$Ti | $^{59}$V | $^{60}$Cr | $^{61}$Mn | $^{62}$Fe | $^{63}$Co | $^{64}$Ni | $^{65}$Cu |
| | | | | 37 | $^{56}$K | $^{57}$Ca | $^{58}$Sc | $^{59}$Ti | $^{60}$V | $^{61}$Cr | $^{62}$Mn | $^{63}$Fe | $^{64}$Co | $^{65}$Ni | $^{66}$Cu |
| | | | | 38 | $^{57}$K | $^{58}$Ca | $^{59}$Sc | $^{60}$Ti | $^{61}$V | $^{62}$Cr | $^{63}$Mn | $^{64}$Fe | $^{65}$Co | $^{66}$Ni | $^{67}$Cu |
| | | | | 39 | | $^{59}$Ca | $^{60}$Sc | $^{61}$Ti | $^{62}$V | $^{63}$Cr | $^{64}$Mn | $^{65}$Fe | $^{66}$Co | $^{67}$Ni | $^{68}$Cu |
| | | | | 40 | $^{59}$K | $^{60}$Ca | $^{61}$Sc | $^{62}$Ti | $^{63}$V | $^{64}$Cr | $^{65}$Mn | $^{66}$Fe | $^{67}$Co | $^{68}$Ni | $^{69}$Cu |
| | | | | | 41 | | $^{62}$Sc | $^{63}$Ti | $^{64}$V | $^{65}$Cr | $^{66}$Mn | $^{67}$Fe | $^{68}$Co | $^{69}$Ni | $^{70}$Cu |
| | | | | | | 42 | | $^{64}$Ti | $^{65}$V | $^{66}$Cr | $^{67}$Mn | $^{68}$Fe | $^{69}$Co | $^{70}$Ni | $^{71}$Cu |
| | | | | | | | 43 | | $^{66}$V | $^{67}$Cr | $^{68}$Mn | $^{69}$Fe | $^{70}$Co | $^{71}$Ni | $^{72}$Cu |
| | | | | | | | | 44 | $^{67}$V | $^{68}$Cr | $^{69}$Mn | $^{70}$Fe | $^{71}$Co | $^{72}$Ni | $^{73}$Cu |
| | | | | | | | | | 45 | $^{69}$Cr | $^{70}$Mn | $^{71}$Fe | $^{72}$Co | $^{73}$Ni | $^{74}$Cu |
| | | | | | | | | | 46 | $^{70}$Cr | $^{71}$Mn | $^{72}$Fe | $^{73}$Co | $^{74}$Ni | $^{75}$Cu |
| | | | | | | | | | | 47 | $^{72}$Mn | $^{73}$Fe | $^{74}$Co | $^{75}$Ni | $^{76}$Cu |
| | | | | | | | | | | 48 | $^{73}$Mn | $^{74}$Fe | $^{75}$Co | $^{76}$Ni | $^{77}$Cu |
| | | | | | | | | | | | 49 | $^{75}$Fe | $^{76}$Co | $^{77}$Ni | $^{78}$Cu |
| | | | | | | | | | | | 50 | $^{76}$Fe | $^{77}$Co | $^{78}$Ni | $^{79}$Cu |
| | | | | | | | | | | | | 51 | $^{78}$Co | $^{79}$Ni | $^{80}$Cu |
| | | | | | | | | | | | | | 52 | $^{80}$Ni | $^{81}$Cu |
| | | | | | | | | | | | | | 53 | $^{81}$Ni | $^{82}$Cu |
| | | | | | | | | | | | | | 54 | $^{82}$Ni | $^{83}$Cu |

## Isotopes for elements 30-44

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table
Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 30 |
| n ↓ | Zn | 31 |
| 24 | $^{54}$Zn | Ga | 32 |
| 25 | $^{55}$Zn | | Ge | 33 |
| 26 | $^{56}$Zn | | | As |
| 27 | $^{57}$Zn | | $^{59}$Ge | | 34 |
| 28 | $^{58}$Zn | | $^{60}$Ge | | Se | 35 |
| 29 | $^{59}$Zn | $^{60}$Ga | $^{61}$Ge | | $^{63}$Se | Br | 36 |
| 30 | $^{60}$Zn | $^{61}$Ga | $^{62}$Ge | | $^{64}$Se | | Kr |
| 31 | $^{61}$Zn | $^{62}$Ga | $^{63}$Ge | $^{64}$As | $^{65}$Se | | $^{67}$Kr |
| 32 | $^{62}$Zn | $^{63}$Ga | $^{64}$Ge | $^{65}$As | $^{66}$Se | | $^{68}$Kr | 37 |
| 33 | $^{63}$Zn | $^{64}$Ga | $^{65}$Ge | $^{66}$As | $^{67}$Se | $^{68}$Br | $^{69}$Kr | Rb | 38 |
| 34 | $^{64}$Zn | $^{65}$Ga | $^{66}$Ge | $^{67}$As | $^{68}$Se | $^{69}$Br | $^{70}$Kr | | Sr | 39 |
| 35 | $^{65}$Zn | $^{66}$Ga | $^{67}$Ge | $^{68}$As | $^{69}$Se | $^{70}$Br | $^{71}$Kr | $^{72}$Rb | $^{73}$Sr | Y | 40 |
| 36 | $^{66}$Zn | $^{67}$Ga | $^{68}$Ge | $^{69}$As | $^{70}$Se | $^{71}$Br | $^{72}$Kr | $^{73}$Rb | $^{74}$Sr | | Zr | 41 |
| 37 | $^{67}$Zn | $^{68}$Ga | $^{69}$Ge | $^{70}$As | $^{71}$Se | $^{72}$Br | $^{73}$Kr | $^{74}$Rb | $^{75}$Sr | $^{76}$Y | $^{77}$Zr | Nb | 42 |
| 38 | $^{68}$Zn | $^{69}$Ga | $^{70}$Ge | $^{71}$As | $^{72}$Se | $^{73}$Br | $^{74}$Kr | $^{75}$Rb | $^{76}$Sr | $^{77}$Y | $^{78}$Zr | | Mo | 43 |
| 39 | $^{69}$Zn | $^{70}$Ga | $^{71}$Ge | $^{72}$As | $^{73}$Se | $^{74}$Br | $^{75}$Kr | $^{76}$Rb | $^{77}$Sr | $^{78}$Y | $^{79}$Zr | | $^{81}$Mo | Tc | 44 |
| 40 | $^{70}$Zn | $^{71}$Ga | $^{72}$Ge | $^{73}$As | $^{74}$Se | $^{75}$Br | $^{76}$Kr | $^{77}$Rb | $^{78}$Sr | $^{79}$Y | $^{80}$Zr | | $^{82}$Mo | | Ru |
| 41 | $^{71}$Zn | $^{72}$Ga | $^{73}$Ge | $^{74}$As | $^{75}$Se | $^{76}$Br | $^{77}$Kr | $^{78}$Rb | $^{79}$Sr | $^{80}$Y | $^{81}$Zr | $^{82}$Nb | $^{83}$Mo | | $^{85}$Ru |
| 42 | $^{72}$Zn | $^{73}$Ga | $^{74}$Ge | $^{75}$As | $^{76}$Se | $^{77}$Br | $^{78}$Kr | $^{79}$Rb | $^{80}$Sr | $^{81}$Y | $^{82}$Zr | $^{83}$Nb | $^{84}$Mo | | $^{86}$Ru |
| 43 | $^{73}$Zn | $^{74}$Ga | $^{75}$Ge | $^{76}$As | $^{77}$Se | $^{78}$Br | $^{79}$Kr | $^{80}$Rb | $^{81}$Sr | $^{82}$Y | $^{83}$Zr | $^{84}$Nb | $^{85}$Mo | $^{86}$Tc | $^{87}$Ru |
| 44 | $^{74}$Zn | $^{75}$Ga | $^{76}$Ge | $^{77}$As | $^{78}$Se | $^{79}$Br | $^{80}$Kr | $^{81}$Rb | $^{82}$Sr | $^{83}$Y | $^{84}$Zr | $^{85}$Nb | $^{86}$Mo | $^{87}$Tc | $^{88}$Ru |
| 45 | $^{75}$Zn | $^{76}$Ga | $^{77}$Ge | $^{78}$As | Se | $^{80}$Br | $^{81}$Kr | $^{82}$Rb | $^{83}$Sr | $^{84}$Y | $^{85}$Zr | $^{86}$Nb | $^{87}$Mo | $^{88}$Tc | $^{89}$Ru |
| 46 | $^{76}$Zn | $^{77}$Ga | $^{78}$Ge | $^{79}$As | $^{80}$Se | $^{81}$Br | $^{82}$Kr | $^{83}$Rb | $^{84}$Sr | $^{85}$Y | $^{86}$Zr | $^{87}$Nb | $^{88}$Mo | $^{89}$Tc | $^{90}$Ru |
| 47 | $^{77}$Zn | $^{78}$Ga | $^{79}$Ge | $^{80}$As | $^{81}$Se | $^{82}$Br | $^{83}$Kr | $^{84}$Rb | $^{85}$Sr | $^{86}$Y | $^{87}$Zr | $^{88}$Nb | $^{89}$Mo | $^{90}$Tc | $^{91}$Ru |
| 48 | $^{78}$Zn | $^{79}$Ga | $^{80}$Ge | $^{81}$As | $^{82}$Se | $^{83}$Br | $^{84}$Kr | $^{85}$Rb | $^{86}$Sr | $^{87}$Y | $^{88}$Zr | $^{89}$Nb | $^{90}$Mo | $^{91}$Tc | $^{92}$Ru |
| 49 | $^{79}$Zn | $^{80}$Ga | $^{81}$Ge | $^{82}$As | $^{83}$Se | $^{84}$Br | Kr | $^{86}$Rb | $^{87}$Sr | $^{88}$Y | $^{89}$Zr | $^{90}$Nb | $^{91}$Mo | $^{92}$Tc | $^{93}$Ru |
| 50 | $^{80}$Zn | $^{81}$Ga | $^{82}$Ge | $^{83}$As | $^{84}$Se | $^{85}$Br | $^{86}$Kr | $^{87}$Rb | $^{88}$Sr | $^{89}$Y | $^{90}$Zr | $^{91}$Nb | $^{92}$Mo | $^{93}$Tc | $^{94}$Ru |
| 51 | $^{81}$Zn | $^{82}$Ga | $^{83}$Ge | $^{84}$As | $^{85}$Se | $^{86}$Br | $^{87}$Kr | $^{88}$Rb | $^{89}$Sr | $^{90}$Y | $^{91}$Zr | $^{92}$Nb | $^{93}$Mo | $^{94}$Tc | $^{95}$Ru |
| 52 | $^{82}$Zn | $^{83}$Ga | $^{84}$Ge | $^{85}$As | $^{86}$Se | $^{87}$Br | $^{88}$Kr | $^{89}$Rb | Sr | $^{91}$Y | $^{92}$Zr | $^{93}$Nb | $^{94}$Mo | $^{95}$Tc | $^{96}$Ru |
| 53 | $^{83}$Zn | $^{84}$Ga | $^{85}$Ge | $^{86}$As | $^{87}$Se | $^{88}$Br | $^{89}$Kr | $^{90}$Rb | $^{91}$Sr | $^{92}$Y | Zr | $^{94}$Nb | $^{95}$Mo | $^{96}$Tc | $^{97}$Ru |
| 54 | $^{84}$Zn | $^{85}$Ga | $^{86}$Ge | $^{87}$As | $^{88}$Se | $^{89}$Br | $^{90}$Kr | $^{91}$Rb | $^{92}$Sr | $^{93}$Y | $^{94}$Zr | $^{95}$Nb | $^{96}$Mo | $^{97}$Tc | $^{98}$Ru |
| 55 | $^{85}$Zn | $^{86}$Ga | $^{87}$Ge | $^{88}$As | $^{89}$Se | $^{90}$Br | $^{91}$Kr | $^{92}$Rb | $^{93}$Sr | $^{94}$Y | $^{95}$Zr | $^{96}$Nb | $^{97}$Mo | $^{98}$Tc | $^{99}$Ru |
| | 56 | $^{87}$Ga | $^{88}$Ge | $^{89}$As | $^{90}$Se | $^{91}$Br | $^{92}$Kr | $^{93}$Rb | $^{94}$Sr | $^{95}$Y | $^{96}$Zr | $^{97}$Nb | $^{98}$Mo | Tc | $^{100}$Ru |
| | 57 | | $^{89}$Ge | $^{90}$As | $^{91}$Se | $^{92}$Br | $^{93}$Kr | $^{94}$Rb | $^{95}$Sr | $^{96}$Y | $^{97}$Zr | $^{98}$Nb | $^{99}$Mo | $^{100}$Tc | $^{101}$Ru |
| | | 58 | $^{90}$Ge | $^{91}$As | $^{92}$Se | $^{93}$Br | $^{94}$Kr | $^{95}$Rb | $^{96}$Sr | $^{97}$Y | $^{98}$Zr | $^{99}$Nb | $^{100}$Mo | $^{101}$Tc | $^{102}$Ru |
| | | | 59 | $^{92}$As | $^{93}$Se | $^{94}$Br | $^{95}$Kr | $^{96}$Rb | $^{97}$Sr | $^{98}$Y | $^{99}$Zr | $^{100}$Nb | $^{101}$Mo | $^{102}$Tc | $^{103}$Ru |
| | | | | 60 | $^{94}$Se | $^{95}$Br | $^{96}$Kr | $^{97}$Rb | $^{98}$Sr | $^{99}$Y | $^{100}$Zr | $^{101}$Nb | $^{102}$Mo | $^{103}$Tc | $^{104}$Ru |
| | | | | 61 | $^{95}$Se | $^{96}$Br | $^{97}$Kr | $^{98}$Rb | $^{99}$Sr | $^{100}$Y | $^{101}$Zr | $^{102}$Nb | $^{103}$Mo | $^{104}$Tc | $^{105}$Ru |
| | | | | | 62 | $^{97}$Br | $^{98}$Kr | $^{99}$Rb | $^{100}$Sr | $^{101}$Y | $^{102}$Zr | $^{103}$Nb | $^{104}$Mo | $^{105}$Tc | $^{106}$Ru |
| | | | | | 63 | $^{98}$Br | $^{99}$Kr | $^{100}$Rb | $^{101}$Sr | $^{102}$Y | $^{103}$Zr | $^{104}$Nb | $^{105}$Mo | $^{106}$Tc | $^{107}$Ru |
| | | | | | 64 | | $^{100}$Kr | $^{101}$Rb | $^{102}$Sr | $^{103}$Y | $^{104}$Zr | $^{105}$Nb | $^{106}$Mo | $^{107}$Tc | $^{108}$Ru |
| | | | | | 65 | | $^{101}$Kr | $^{102}$Rb | $^{103}$Sr | $^{104}$Y | $^{105}$Zr | $^{106}$Nb | $^{107}$Mo | $^{108}$Tc | $^{109}$Ru |
| | | | | | 66 | $^{101}$Br | $^{102}$Kr | $^{103}$Rb | $^{104}$Sr | $^{105}$Y | $^{106}$Zr | $^{107}$Nb | $^{108}$Mo | $^{109}$Tc | $^{110}$Ru |
| | | | | | | | 67 | $^{104}$Rb | $^{105}$Sr | $^{106}$Y | $^{107}$Zr | $^{108}$Nb | $^{109}$Mo | $^{110}$Tc | $^{111}$Ru |
| | | | | | | | 68 | $^{105}$Rb | $^{106}$Sr | $^{107}$Y | $^{108}$Zr | $^{109}$Nb | $^{110}$Mo | $^{111}$Tc | $^{112}$Ru |
| | | | | | | | 69 | $^{106}$Rb | $^{107}$Sr | $^{108}$Y | $^{109}$Zr | $^{110}$Nb | $^{111}$Mo | $^{112}$Tc | $^{113}$Ru |
| | | | | | | | | 70 | $^{108}$Sr | $^{109}$Y | $^{110}$Zr | $^{111}$Nb | $^{112}$Mo | $^{113}$Tc | $^{114}$Ru |
| | | | | | | | | | 71 | $^{110}$Y | $^{111}$Zr | $^{112}$Nb | $^{113}$Mo | $^{114}$Tc | $^{115}$Ru |
| | | | | | | | | | 72 | $^{111}$Y | $^{112}$Zr | $^{113}$Nb | $^{114}$Mo | $^{115}$Tc | $^{116}$Ru |
| | | | | | | | | | | 73 | $^{113}$Zr | $^{114}$Nb | $^{115}$Mo | $^{116}$Tc | $^{117}$Ru |
| | | | | | | | | | | | 74 | $^{115}$Nb | $^{116}$Mo | $^{117}$Tc | $^{118}$Ru |
| | | | | | | | | | | | 75 | $^{116}$Nb | $^{117}$Mo | $^{118}$Tc | $^{119}$Ru |
| | | | | | | | | | | | 76 | $^{117}$Nb | $^{118}$Mo | $^{119}$Tc | $^{120}$Ru |
| | | | | | | | | | | | | 77 | $^{119}$Mo | $^{120}$Tc | $^{121}$Ru |
| | | | | | | | | | | | | | 78 | $^{121}$Tc | $^{122}$Ru |
| | | | | | | | | | | | | | 79 | $^{122}$Tc | $^{123}$Ru |
| | | | | | | | | | | | | | | 80 | $^{124}$Ru |
| | | | | | | | | | | | | | | 81 | $^{125}$Ru |

## Isotopes for elements 45-59

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table
Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 45 |
| n ↓ | Rh | 46 |
| 43 | | Pd | 47 |
| 44 | $^{89}$Rh | $^{90}$Pd | Ag | 48 |
| 45 | $^{90}$Rh | $^{91}$Pd | $^{92}$Ag | Cd | 49 |
| 46 | $^{91}$Rh | $^{92}$Pd | $^{93}$Ag | $^{94}$Cd | In |
| 47 | $^{92}$Rh | $^{93}$Pd | $^{94}$Ag | $^{95}$Cd | $^{96}$In | 50 |
| 48 | $^{93}$Rh | $^{94}$Pd | $^{95}$Ag | $^{96}$Cd | $^{97}$In | Sn |
| 49 | $^{94}$Rh | $^{95}$Pd | $^{96}$Ag | $^{97}$Cd | $^{98}$In | $^{99}$Sn | 51 |
| 50 | $^{95}$Rh | $^{96}$Pd | $^{97}$Ag | $^{98}$Cd | $^{99}$In | $^{100}$Sn | Sb | 52 |
| 51 | $^{96}$Rh | $^{97}$Pd | $^{98}$Ag | $^{99}$Cd | $^{100}$In | $^{101}$Sn | | Te | 53 |
| 52 | $^{97}$Rh | $^{98}$Pd | $^{99}$Ag | $^{100}$Cd | $^{101}$In | $^{102}$Sn | $^{103}$Sb | $^{104}$Te | I | 54 |
| 53 | $^{98}$Rh | $^{99}$Pd | $^{100}$Ag | $^{101}$Cd | $^{102}$In | $^{103}$Sn | $^{104}$Sb | $^{105}$Te | | Xe |
| 54 | $^{99}$Rh | $^{100}$Pd | $^{101}$Ag | $^{102}$Cd | $^{103}$In | $^{104}$Sn | $^{105}$Sb | $^{106}$Te | | $^{108}$Xe | 55 |
| 55 | $^{100}$Rh | $^{101}$Pd | $^{102}$Ag | $^{103}$Cd | $^{104}$In | $^{105}$Sn | $^{106}$Sb | $^{107}$Te | $^{108}$I | $^{109}$Xe | Cs | 56 |
| 56 | $^{101}$Rh | $^{102}$Pd | $^{103}$Ag | $^{104}$Cd | $^{105}$In | $^{106}$Sn | $^{107}$Sb | $^{108}$Te | $^{109}$I | $^{110}$Xe | | Ba |
| 57 | $^{102}$Rh | $^{103}$Pd | $^{104}$Ag | $^{105}$Cd | $^{106}$In | $^{107}$Sn | $^{108}$Sb | $^{109}$Te | $^{110}$I | $^{111}$Xe | $^{112}$Cs | | 57 |
| 58 | $^{103}$Rh | $^{104}$Pd | $^{105}$Ag | $^{106}$Cd | $^{107}$In | $^{108}$Sn | $^{109}$Sb | $^{110}$Te | $^{111}$I | $^{112}$Xe | $^{113}$Cs | $^{114}$Ba | La |
| 59 | $^{104}$Rh | $^{105}$Pd | $^{106}$Ag | $^{107}$Cd | $^{108}$In | $^{109}$Sn | $^{110}$Sb | $^{111}$Te | $^{112}$I | $^{113}$Xe | $^{114}$Cs | $^{115}$Ba | | 58 |
| 60 | $^{105}$Rh | $^{106}$Pd | $^{107}$Ag | $^{108}$Cd | $^{109}$In | $^{110}$Sn | $^{111}$Sb | $^{112}$Te | $^{113}$I | $^{114}$Xe | $^{115}$Cs | $^{116}$Ba | $^{117}$La | Ce | 59 |
| 61 | $^{106}$Rh | Pd | $^{108}$Ag | $^{109}$Cd | $^{110}$In | $^{111}$Sn | $^{112}$Sb | $^{113}$Te | $^{114}$I | $^{115}$Xe | $^{116}$Cs | $^{117}$Ba | $^{118}$La | | Pr |
| 62 | $^{107}$Rh | $^{108}$Pd | $^{109}$Ag | $^{110}$Cd | $^{111}$In | $^{112}$Sn | $^{113}$Sb | $^{114}$Te | $^{115}$I | $^{116}$Xe | $^{117}$Cs | $^{118}$Ba | $^{119}$La | | $^{121}$Pr |
| 63 | $^{108}$Rh | $^{109}$Pd | $^{110}$Ag | $^{111}$Cd | $^{112}$In | $^{113}$Sn | $^{114}$Sb | $^{115}$Te | $^{116}$I | $^{117}$Xe | $^{118}$Cs | $^{119}$Ba | $^{120}$La | $^{121}$Ce | $^{122}$Pr |
| 64 | $^{109}$Rh | $^{110}$Pd | $^{111}$Ag | $^{112}$Cd | $^{113}$In | $^{114}$Sn | $^{115}$Sb | $^{116}$Te | $^{117}$I | $^{118}$Xe | $^{119}$Cs | $^{120}$Ba | $^{121}$La | $^{122}$Ce | $^{123}$Pr |
| 65 | $^{110}$Rh | $^{111}$Pd | $^{112}$Ag | Cd | $^{114}$In | $^{115}$Sn | $^{116}$Sb | $^{117}$Te | $^{118}$I | $^{119}$Xe | $^{120}$Cs | $^{121}$Ba | $^{122}$La | $^{123}$Ce | $^{124}$Pr |
| 66 | $^{111}$Rh | $^{112}$Pd | $^{113}$Ag | $^{114}$Cd | $^{115}$In | $^{116}$Sn | $^{117}$Sb | $^{118}$Te | $^{119}$I | $^{120}$Xe | $^{121}$Cs | $^{122}$Ba | $^{123}$La | $^{124}$Ce | $^{125}$Pr |
| 67 | $^{112}$Rh | $^{113}$Pd | $^{114}$Ag | $^{115}$Cd | $^{116}$In | $^{117}$Sn | $^{118}$Sb | $^{119}$Te | $^{120}$I | $^{121}$Xe | $^{122}$Cs | $^{123}$Ba | $^{124}$La | $^{125}$Ce | $^{126}$Pr |
| 68 | $^{113}$Rh | $^{114}$Pd | $^{115}$Ag | $^{116}$Cd | $^{117}$In | $^{118}$Sn | $^{119}$Sb | $^{120}$Te | $^{121}$I | $^{122}$Xe | $^{123}$Cs | $^{124}$Ba | $^{125}$La | $^{126}$Ce | $^{127}$Pr |
| 69 | $^{114}$Rh | $^{115}$Pd | $^{116}$Ag | $^{117}$Cd | $^{118}$In | $^{119}$Sn | $^{120}$Sb | $^{121}$Te | $^{122}$I | $^{123}$Xe | $^{124}$Cs | $^{125}$Ba | $^{126}$La | $^{127}$Ce | $^{128}$Pr |
| 70 | $^{115}$Rh | $^{116}$Pd | $^{117}$Ag | $^{118}$Cd | $^{119}$In | $^{120}$Sn | $^{121}$Sb | $^{122}$Te | $^{123}$I | $^{124}$Xe | $^{125}$Cs | $^{126}$Ba | $^{127}$La | $^{128}$Ce | $^{129}$Pr |
| 71 | $^{116}$Rh | $^{117}$Pd | $^{118}$Ag | $^{119}$Cd | $^{120}$In | Sn | $^{122}$Sb | $^{123}$Te | $^{124}$I | $^{125}$Xe | $^{126}$Cs | $^{127}$Ba | $^{128}$La | $^{129}$Ce | $^{130}$Pr |
| 72 | $^{117}$Rh | $^{118}$Pd | $^{119}$Ag | $^{120}$Cd | $^{121}$In | $^{122}$Sn | $^{123}$Sb | $^{124}$Te | $^{125}$I | $^{126}$Xe | $^{127}$Cs | $^{128}$Ba | $^{129}$La | $^{130}$Ce | $^{131}$Pr |
| 73 | $^{118}$Rh | $^{119}$Pd | $^{120}$Ag | $^{121}$Cd | $^{122}$In | $^{123}$Sn | $^{124}$Sb | $^{125}$Te | $^{126}$I | $^{127}$Xe | $^{128}$Cs | $^{129}$Ba | $^{130}$La | $^{131}$Ce | $^{132}$Pr |
| 74 | $^{119}$Rh | $^{120}$Pd | $^{121}$Ag | $^{122}$Cd | $^{123}$In | $^{124}$Sn | $^{125}$Sb | $^{126}$Te | $^{127}$I | $^{128}$Xe | $^{129}$Cs | $^{130}$Ba | $^{131}$La | $^{132}$Ce | $^{133}$Pr |
| 75 | $^{120}$Rh | $^{121}$Pd | $^{122}$Ag | $^{123}$Cd | $^{124}$In | $^{125}$Sn | $^{126}$Sb | $^{127}$Te | $^{128}$I | $^{129}$Xe | $^{130}$Cs | $^{131}$Ba | $^{132}$La | $^{133}$Ce | $^{134}$Pr |
| 76 | $^{121}$Rh | $^{122}$Pd | $^{123}$Ag | $^{124}$Cd | $^{125}$In | Sn | $^{127}$Sb | $^{128}$Te | I | $^{130}$Xe | $^{131}$Cs | $^{132}$Ba | $^{133}$La | $^{134}$Ce | $^{135}$Pr |
| 77 | $^{122}$Rh | $^{123}$Pd | $^{124}$Ag | $^{125}$Cd | $^{126}$In | $^{127}$Sn | $^{128}$Sb | $^{129}$Te | $^{130}$I | $^{131}$Xe | $^{132}$Cs | $^{133}$Ba | $^{134}$La | $^{135}$Ce | $^{136}$Pr |
| 78 | $^{123}$Rh | $^{124}$Pd | $^{125}$Ag | $^{126}$Cd | $^{127}$In | $^{128}$Sn | $^{129}$Sb | $^{130}$Te | I | $^{132}$Xe | $^{133}$Cs | $^{134}$Ba | $^{135}$La | $^{136}$Ce | $^{137}$Pr |
| 79 | $^{124}$Rh | $^{125}$Pd | $^{126}$Ag | $^{127}$Cd | $^{128}$In | $^{129}$Sn | $^{130}$Sb | $^{131}$Te | $^{132}$I | $^{133}$Xe | Cs | $^{135}$Ba | $^{136}$La | $^{137}$Ce | $^{138}$Pr |
| 80 | $^{125}$Rh | $^{126}$Pd | $^{127}$Ag | $^{128}$Cd | $^{129}$In | $^{130}$Sn | $^{131}$Sb | $^{132}$Te | $^{133}$I | $^{134}$Xe | Cs | $^{136}$Ba | $^{137}$La | $^{138}$Ce | $^{139}$Pr |
| 81 | $^{126}$Rh | $^{127}$Pd | $^{128}$Ag | $^{129}$Cd | $^{130}$In | $^{131}$Sn | $^{132}$Sb | $^{133}$Te | $^{134}$I | Xe | $^{136}$Cs | $^{137}$Ba | $^{138}$La | $^{139}$Ce | $^{140}$Pr |
| 82 | $^{127}$Rh | $^{128}$Pd | $^{129}$Ag | $^{130}$Cd | $^{131}$In | $^{132}$Sn | $^{133}$Sb | $^{134}$Te | $^{135}$I | $^{136}$Xe | Cs | $^{138}$Ba | $^{139}$La | $^{140}$Ce | $^{141}$Pr |
| 83 | $^{128}$Rh | $^{129}$Pd | $^{130}$Ag | $^{131}$Cd | $^{132}$In | $^{133}$Sn | $^{134}$Sb | $^{135}$Te | $^{136}$I | $^{137}$Xe | $^{138}$Cs | $^{139}$Ba | $^{140}$La | $^{141}$Ce | $^{142}$Pr |
| | 84 | $^{130}$Pd | $^{131}$Ag | $^{132}$Cd | $^{133}$In | $^{134}$Sn | $^{135}$Sb | $^{136}$Te | $^{137}$I | $^{138}$Xe | $^{139}$Cs | $^{140}$Ba | $^{141}$La | $^{142}$Ce | $^{143}$Pr |
| | 85 | $^{131}$Pd | $^{132}$Ag | $^{133}$Cd | $^{134}$In | $^{135}$Sn | $^{136}$Sb | $^{137}$Te | $^{138}$I | $^{139}$Xe | $^{140}$Cs | $^{141}$Ba | $^{142}$La | $^{143}$Ce | $^{144}$Pr |
| | | 86 | | $^{134}$Cd | $^{135}$In | $^{136}$Sn | $^{137}$Sb | $^{138}$Te | $^{139}$I | $^{140}$Xe | $^{141}$Cs | $^{142}$Ba | $^{143}$La | $^{144}$Ce | $^{145}$Pr |
| | | | 87 | | $^{136}$In | $^{137}$Sn | $^{138}$Sb | $^{139}$Te | $^{140}$I | $^{141}$Xe | $^{142}$Cs | $^{143}$Ba | $^{144}$La | $^{145}$Ce | $^{146}$Pr |
| | | | | 88 | $^{137}$In | $^{138}$Sn | $^{139}$Sb | $^{140}$Te | $^{141}$I | $^{142}$Xe | $^{143}$Cs | $^{144}$Ba | $^{145}$La | $^{146}$Ce | $^{147}$Pr |
| | | | | | 89 | $^{139}$Sn | $^{140}$Sb | $^{141}$Te | $^{142}$I | $^{143}$Xe | $^{144}$Cs | $^{145}$Ba | $^{146}$La | $^{147}$Ce | $^{148}$Pr |
| | | | | | 90 | $^{140}$Sn | $^{141}$Sb | $^{142}$Te | $^{143}$I | $^{144}$Xe | $^{145}$Cs | $^{146}$Ba | $^{147}$La | $^{148}$Ce | $^{149}$Pr |
| | | | | | | 91 | $^{142}$Sb | $^{143}$Te | $^{144}$I | $^{145}$Xe | $^{146}$Cs | $^{147}$Ba | $^{148}$La | $^{149}$Ce | $^{150}$Pr |
| | | | | | | | 92 | $^{144}$Te | $^{145}$I | $^{146}$Xe | $^{147}$Cs | $^{148}$Ba | $^{149}$La | $^{150}$Ce | $^{151}$Pr |
| | | | | | | | 93 | $^{145}$Te | $^{146}$I | $^{147}$Xe | $^{148}$Cs | $^{149}$Ba | $^{150}$La | $^{151}$Ce | $^{152}$Pr |
| | | | | | | | | 94 | $^{147}$I | $^{148}$Xe | $^{149}$Cs | $^{150}$Ba | $^{151}$La | $^{152}$Ce | $^{153}$Pr |
| | | | | | | | | | 95 | $^{149}$Xe | $^{150}$Cs | $^{151}$Ba | $^{152}$La | $^{153}$Ce | $^{154}$Pr |
| | | | | | | | | | 96 | $^{150}$Xe | $^{151}$Cs | $^{152}$Ba | $^{153}$La | $^{154}$Ce | $^{155}$Pr |
| | | | | | | | | | | 97 | $^{152}$Cs | $^{153}$Ba | $^{154}$La | $^{155}$Ce | $^{156}$Pr |
| | | | | | | | | | | | 98 | $^{154}$Ba | $^{155}$La | $^{156}$Ce | $^{157}$Pr |
| | | | | | | | | | | | | 99 | $^{156}$La | $^{157}$Ce | $^{158}$Pr |
| | | | | | | | | | | | | 100 | $^{157}$La | $^{158}$Ce | $^{159}$Pr |
| | | | | | | | | | | | | | 101 | | $^{160}$Pr |
| | | | | | | | | | | | | | | 102 | $^{161}$Pr |

## Isotopes for elements 60-74

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Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 60 |
| n ↓ | Nd | 61 |
| 64 | | Pm | 62 |
| 65 | $^{125}$Nd | | Sm | 63 |
| 66 | $^{126}$Nd | | | Eu |
| 67 | $^{127}$Nd | $^{128}$Pm | $^{129}$Sm | $^{130}$Eu | 64 |
| 68 | $^{128}$Nd | $^{129}$Pm | $^{130}$Sm | $^{131}$Eu | Gd | 65 |
| 69 | $^{129}$Nd | $^{130}$Pm | $^{131}$Sm | | | Tb |
| 70 | $^{130}$Nd | $^{131}$Pm | $^{132}$Sm | | | $^{135}$Tb | 66 |
| 71 | $^{131}$Nd | $^{132}$Pm | $^{133}$Sm | $^{134}$Eu | $^{135}$Gd | | Dy | 67 |
| 72 | $^{132}$Nd | $^{133}$Pm | $^{134}$Sm | $^{135}$Eu | $^{136}$Gd | | | Ho | 68 |
| 73 | $^{133}$Nd | $^{134}$Pm | $^{135}$Sm | $^{136}$Eu | $^{137}$Gd | $^{138}$Tb | $^{139}$Dy | $^{140}$Ho | Er | 69 |
| 74 | $^{134}$Nd | $^{135}$Pm | $^{136}$Sm | $^{137}$Eu | $^{138}$Gd | $^{139}$Tb | $^{140}$Dy | $^{141}$Ho | | Tm |
| 75 | $^{135}$Nd | $^{136}$Pm | $^{137}$Sm | $^{138}$Eu | $^{139}$Gd | $^{140}$Tb | $^{141}$Dy | $^{142}$Ho | $^{143}$Er | $^{144}$Tm |
| 76 | $^{136}$Nd | $^{137}$Pm | $^{138}$Sm | $^{139}$Eu | $^{140}$Gd | $^{141}$Tb | $^{142}$Dy | $^{143}$Ho | $^{144}$Er | $^{145}$Tm | 70 |
| 77 | $^{137}$Nd | $^{138}$Pm | $^{139}$Sm | $^{140}$Eu | $^{141}$Gd | $^{142}$Tb | $^{143}$Dy | $^{144}$Ho | $^{145}$Er | $^{146}$Tm | Yb | 71 |
| 78 | $^{138}$Nd | $^{139}$Pm | $^{140}$Sm | $^{141}$Eu | $^{142}$Gd | $^{143}$Tb | $^{144}$Dy | $^{145}$Ho | $^{146}$Er | $^{147}$Tm | | Lu |
| 79 | $^{139}$Nd | $^{140}$Pm | $^{141}$Sm | $^{142}$Eu | $^{143}$Gd | $^{144}$Tb | $^{145}$Dy | $^{146}$Ho | $^{147}$Er | $^{148}$Tm | $^{149}$Yb | $^{150}$Lu | 72 |
| 80 | $^{140}$Nd | $^{141}$Pm | $^{142}$Sm | $^{143}$Eu | $^{144}$Gd | $^{145}$Tb | $^{146}$Dy | $^{147}$Ho | $^{148}$Er | $^{149}$Tm | $^{150}$Yb | $^{151}$Lu | Hf | 73 | 74 |
| 81 | $^{141}$Nd | $^{142}$Pm | $^{143}$Sm | $^{144}$Eu | $^{145}$Gd | $^{146}$Tb | $^{147}$Dy | $^{148}$Ho | $^{149}$Er | $^{150}$Tm | $^{151}$Yb | $^{152}$Lu | $^{153}$Hf | Ta | W |
| 82 | $^{142}$Nd | $^{143}$Pm | $^{144}$Sm | $^{145}$Eu | $^{146}$Gd | $^{147}$Tb | $^{148}$Dy | $^{149}$Ho | $^{150}$Er | $^{151}$Tm | $^{152}$Yb | $^{153}$Lu | $^{154}$Hf | $^{155}$Ta | $^{156}$W |
| 83 | $^{143}$Nd | $^{144}$Pm | $^{145}$Sm | $^{146}$Eu | $^{147}$Gd | $^{148}$Tb | $^{149}$Dy | $^{150}$Ho | $^{151}$Er | $^{152}$Tm | $^{153}$Yb | $^{154}$Lu | $^{155}$Hf | $^{156}$Ta | $^{157}$W |
| 84 | $^{144}$Nd | $^{145}$Pm | $^{146}$Sm | $^{147}$Eu | $^{148}$Gd | $^{149}$Tb | $^{150}$Dy | $^{151}$Ho | $^{152}$Er | $^{153}$Tm | $^{154}$Yb | $^{155}$Lu | $^{156}$Hf | $^{157}$Ta | $^{158}$W |
| 85 | $^{145}$Nd | $^{146}$Pm | $^{147}$Sm | $^{148}$Eu | $^{149}$Gd | $^{150}$Tb | $^{151}$Dy | $^{152}$Ho | $^{153}$Er | $^{154}$Tm | $^{155}$Yb | $^{156}$Lu | $^{157}$Hf | $^{158}$Ta | $^{159}$W |
| 86 | $^{146}$Nd | $^{147}$Pm | $^{148}$Sm | $^{149}$Eu | $^{150}$Gd | $^{151}$Tb | $^{152}$Dy | $^{153}$Ho | $^{154}$Er | $^{155}$Tm | $^{156}$Yb | $^{157}$Lu | $^{158}$Hf | $^{159}$Ta | $^{160}$W |
| 87 | $^{147}$Nd | $^{148}$Pm | Sm | $^{150}$Eu | $^{151}$Gd | $^{152}$Tb | $^{153}$Dy | $^{154}$Ho | $^{155}$Er | $^{156}$Tm | $^{157}$Yb | $^{158}$Lu | $^{159}$Hf | $^{160}$Ta | $^{161}$W |
| 88 | $^{148}$Nd | $^{149}$Pm | $^{150}$Sm | $^{151}$Eu | $^{152}$Gd | $^{153}$Tb | $^{154}$Dy | $^{155}$Ho | $^{156}$Er | $^{157}$Tm | $^{158}$Yb | $^{159}$Lu | $^{160}$Hf | $^{161}$Ta | $^{162}$W |
| 89 | $^{149}$Nd | $^{150}$Pm | Sm | $^{152}$Eu | $^{153}$Gd | $^{154}$Tb | $^{155}$Dy | $^{156}$Ho | $^{157}$Er | $^{158}$Tm | $^{159}$Yb | $^{160}$Lu | $^{161}$Hf | $^{162}$Ta | $^{163}$W |
| 90 | $^{150}$Nd | $^{151}$Pm | $^{152}$Sm | $^{153}$Eu | $^{154}$Gd | $^{155}$Tb | $^{156}$Dy | $^{157}$Ho | $^{158}$Er | $^{159}$Tm | $^{160}$Yb | $^{161}$Lu | $^{162}$Hf | $^{163}$Ta | $^{164}$W |
| 91 | $^{151}$Nd | $^{152}$Pm | $^{153}$Sm | $^{154}$Eu | $^{155}$Gd | $^{156}$Tb | $^{157}$Dy | $^{158}$Ho | $^{159}$Er | $^{160}$Tm | $^{161}$Yb | $^{162}$Lu | $^{163}$Hf | $^{164}$Ta | $^{165}$W |
| 92 | $^{152}$Nd | $^{153}$Pm | $^{154}$Sm | Eu | $^{156}$Gd | $^{157}$Tb | $^{158}$Dy | $^{159}$Ho | $^{160}$Er | $^{161}$Tm | $^{162}$Yb | $^{163}$Lu | $^{164}$Hf | $^{165}$Ta | $^{166}$W |
| 93 | $^{153}$Nd | $^{154}$Pm | $^{155}$Sm | $^{156}$Eu | $^{157}$Gd | $^{158}$Tb | $^{159}$Dy | $^{160}$Ho | $^{161}$Er | $^{162}$Tm | $^{163}$Yb | $^{164}$Lu | $^{165}$Hf | $^{166}$Ta | $^{167}$W |
| 94 | $^{154}$Nd | $^{155}$Pm | $^{156}$Sm | $^{157}$Eu | $^{158}$Gd | $^{159}$Tb | $^{160}$Dy | $^{161}$Ho | $^{162}$Er | $^{163}$Tm | $^{164}$Yb | $^{165}$Lu | $^{166}$Hf | $^{167}$Ta | $^{168}$W |
| 95 | $^{155}$Nd | $^{156}$Pm | $^{157}$Sm | $^{158}$Eu | $^{159}$Gd | $^{160}$Tb | $^{161}$Dy | $^{162}$Ho | $^{163}$Er | $^{164}$Tm | $^{165}$Yb | $^{166}$Lu | $^{167}$Hf | $^{168}$Ta | $^{169}$W |
| 96 | $^{156}$Nd | $^{157}$Pm | $^{158}$Sm | $^{159}$Eu | $^{160}$Gd | $^{161}$Tb | $^{162}$Dy | $^{163}$Ho | $^{164}$Er | $^{165}$Tm | $^{166}$Yb | $^{167}$Lu | $^{168}$Hf | $^{169}$Ta | $^{170}$W |
| 97 | $^{157}$Nd | $^{158}$Pm | $^{159}$Sm | $^{160}$Eu | $^{161}$Gd | $^{162}$Tb | $^{163}$Dy | $^{164}$Ho | $^{165}$Er | $^{166}$Tm | $^{167}$Yb | $^{168}$Lu | $^{169}$Hf | $^{170}$Ta | $^{171}$W |
| 98 | $^{158}$Nd | $^{159}$Pm | $^{160}$Sm | $^{161}$Eu | $^{162}$Gd | $^{163}$Tb | $^{164}$Dy | $^{165}$Ho | $^{166}$Er | $^{167}$Tm | $^{168}$Yb | $^{169}$Lu | $^{170}$Hf | $^{171}$Ta | $^{172}$W |
| 99 | $^{159}$Nd | $^{160}$Pm | $^{161}$Sm | $^{162}$Eu | $^{163}$Gd | $^{164}$Tb | $^{165}$Dy | $^{166}$Ho | $^{167}$Er | $^{168}$Tm | $^{169}$Yb | $^{170}$Lu | $^{171}$Hf | $^{172}$Ta | $^{173}$W |
| 100 | $^{160}$Nd | $^{161}$Pm | $^{162}$Sm | $^{163}$Eu | $^{164}$Gd | $^{165}$Tb | $^{166}$Dy | $^{167}$Ho | $^{168}$Er | $^{169}$Tm | $^{170}$Yb | $^{171}$Lu | $^{172}$Hf | $^{173}$Ta | $^{174}$W |
| 101 | $^{161}$Nd | $^{162}$Pm | $^{163}$Sm | $^{164}$Eu | $^{165}$Gd | $^{166}$Tb | $^{167}$Dy | $^{168}$Ho | $^{169}$Er | $^{170}$Tm | $^{171}$Yb | $^{172}$Lu | $^{173}$Hf | $^{174}$Ta | $^{175}$W |
| 102 | $^{162}$Nd | $^{163}$Pm | $^{164}$Sm | $^{165}$Eu | $^{166}$Gd | $^{167}$Tb | $^{168}$Dy | $^{169}$Ho | $^{170}$Er | $^{171}$Tm | $^{172}$Yb | $^{173}$Lu | $^{174}$Hf | $^{175}$Ta | $^{176}$W |
| 103 | $^{163}$Nd | $^{164}$Pm | $^{165}$Sm | $^{166}$Eu | $^{167}$Gd | $^{168}$Tb | $^{169}$Dy | $^{170}$Ho | $^{171}$Er | $^{172}$Tm | $^{173}$Yb | $^{174}$Lu | $^{175}$Hf | $^{176}$Ta | $^{177}$W |
| | 104 | $^{165}$Pm | $^{166}$Sm | $^{167}$Eu | $^{168}$Gd | $^{169}$Tb | $^{170}$Dy | $^{171}$Ho | $^{172}$Er | $^{173}$Tm | $^{174}$Yb | $^{175}$Lu | $^{176}$Hf | $^{177}$Ta | $^{178}$W |
| | 105 | $^{166}$Pm | $^{167}$Sm | $^{168}$Eu | $^{169}$Gd | $^{170}$Tb | $^{171}$Dy | $^{172}$Ho | $^{173}$Er | $^{174}$Tm | $^{175}$Yb | $^{176}$Lu | $^{177}$Hf | $^{178}$Ta | $^{179}$W |
| | | 106 | $^{168}$Sm | $^{169}$Eu | $^{170}$Gd | $^{171}$Tb | $^{172}$Dy | $^{173}$Ho | $^{174}$Er | $^{175}$Tm | $^{176}$Yb | $^{177}$Lu | $^{178}$Hf | $^{179}$Ta | $^{180}$W |
| | | | 107 | $^{170}$Eu | $^{171}$Gd | $^{172}$Tb | $^{173}$Dy | $^{174}$Ho | $^{175}$Er | $^{176}$Tm | $^{177}$Yb | $^{178}$Lu | $^{179}$Hf | $^{180}$Ta | $^{181}$W |
| | | | | 108 | $^{172}$Gd | $^{173}$Tb | $^{174}$Dy | $^{175}$Ho | $^{176}$Er | $^{177}$Tm | $^{178}$Yb | $^{179}$Lu | $^{180}$Hf | $^{181}$Ta | $^{182}$W |
| | | | | | 109 | $^{174}$Tb | $^{175}$Dy | $^{176}$Ho | $^{177}$Er | $^{178}$Tm | $^{179}$Yb | $^{180}$Lu | $^{181}$Hf | $^{182}$Ta | $^{183}$W |
| | | | | | | 110 | $^{176}$Dy | $^{177}$Ho | $^{178}$Er | $^{179}$Tm | $^{180}$Yb | $^{181}$Lu | $^{182}$Hf | $^{183}$Ta | $^{184}$W |
| | | | | | | | 111 | $^{178}$Ho | $^{179}$Er | $^{180}$Tm | $^{181}$Yb | $^{182}$Lu | $^{183}$Hf | $^{184}$Ta | $^{185}$W |
| | | | | | | | | 112 | $^{180}$Er | $^{181}$Tm | $^{182}$Yb | $^{183}$Lu | $^{184}$Hf | $^{185}$Ta | $^{186}$W |
| | | | | | | | | | 113 | $^{182}$Tm | $^{183}$Yb | $^{184}$Lu | $^{185}$Hf | $^{186}$Ta | $^{187}$W |
| | | | | | | | | | 114 | $^{183}$Tm | $^{184}$Yb | $^{185}$Lu | $^{186}$Hf | $^{187}$Ta | $^{188}$W |
| | | | | | | | | | | 115 | $^{185}$Yb | $^{186}$Lu | $^{187}$Hf | $^{188}$Ta | $^{189}$W |
| | | | | | | | | | | 116 | $^{186}$Yb | $^{187}$Lu | $^{188}$Hf | $^{189}$Ta | $^{190}$W |
| | | | | | | | | | | 117 | $^{187}$Yb | $^{188}$Lu | $^{189}$Hf | $^{190}$Ta | $^{191}$W |
| | | | | | | | | | | | 118 | $^{189}$Lu | $^{190}$Hf | $^{191}$Ta | $^{192}$W |
| | | | | | | | | | | | 119 | $^{190}$Lu | $^{191}$Hf | $^{192}$Ta | $^{193}$W |
| | | | | | | | | | | | | 120 | $^{192}$Hf | $^{193}$Ta | $^{194}$W |
| | | | | | | | | | | | | | 121 | $^{194}$Ta | $^{195}$W |
| | | | | | | | | | | | | | | 122 | $^{196}$W |
| | | | | | | | | | | | | | | 123 | $^{197}$W |

## Isotopes for elements 75-89

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table
Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 75 | 76 |
| n ↓ | Re | Os |
| 84 | $^{159}$Re | $^{160}$Os | 77 |
| 85 | $^{160}$Re | $^{161}$Os | Ir | 78 |
| 86 | $^{161}$Re | $^{162}$Os | | Pt |
| 87 | $^{162}$Re | $^{163}$Os | | $^{165}$Pt | 79 |
| 88 | $^{163}$Re | $^{164}$Os | $^{165}$Ir | $^{166}$Pt | Au | 80 |
| 89 | $^{164}$Re | $^{165}$Os | $^{166}$Ir | $^{167}$Pt | | Hg |
| 90 | $^{165}$Re | $^{166}$Os | $^{167}$Ir | $^{168}$Pt | | $^{170}$Hg |
| 91 | $^{166}$Re | $^{167}$Os | $^{168}$Ir | $^{169}$Pt | $^{170}$Au | $^{171}$Hg |
| 92 | $^{167}$Re | $^{168}$Os | $^{169}$Ir | $^{170}$Pt | $^{171}$Au | $^{172}$Hg |
| 93 | $^{168}$Re | $^{169}$Os | $^{170}$Ir | $^{171}$Pt | $^{172}$Au | $^{173}$Hg | 81 |
| 94 | $^{169}$Re | $^{170}$Os | $^{171}$Ir | $^{172}$Pt | $^{173}$Au | $^{174}$Hg | Tl | 82 |
| 95 | $^{170}$Re | $^{171}$Os | $^{172}$Ir | $^{173}$Pt | $^{174}$Au | $^{175}$Hg | $^{176}$Tl | Pb |
| 96 | $^{171}$Re | $^{172}$Os | $^{173}$Ir | $^{174}$Pt | $^{175}$Au | $^{176}$Hg | $^{177}$Tl | $^{178}$Pb |
| 97 | $^{172}$Re | $^{173}$Os | $^{174}$Ir | $^{175}$Pt | $^{176}$Au | $^{177}$Hg | $^{178}$Tl | $^{179}$Pb |
| 98 | $^{173}$Re | $^{174}$Os | $^{175}$Ir | $^{176}$Pt | $^{177}$Au | $^{178}$Hg | $^{179}$Tl | $^{180}$Pb |
| 99 | $^{174}$Re | $^{175}$Os | $^{176}$Ir | $^{177}$Pt | $^{178}$Au | $^{179}$Hg | $^{180}$Tl | $^{181}$Pb | 83 |
| 100 | $^{175}$Re | $^{176}$Os | $^{177}$Ir | $^{178}$Pt | $^{179}$Au | $^{180}$Hg | $^{181}$Tl | $^{182}$Pb | Bi | 84 |
| 101 | $^{176}$Re | $^{177}$Os | $^{178}$Ir | $^{179}$Pt | $^{180}$Au | $^{181}$Hg | $^{182}$Tl | $^{183}$Pb | $^{184}$Bi | Po | 85 |
| 102 | $^{177}$Re | $^{178}$Os | $^{179}$Ir | $^{180}$Pt | $^{181}$Au | $^{182}$Hg | $^{183}$Tl | $^{184}$Pb | $^{185}$Bi | $^{186}$Po | At |
| 103 | $^{178}$Re | $^{179}$Os | $^{180}$Ir | $^{181}$Pt | $^{182}$Au | $^{183}$Hg | $^{184}$Tl | $^{185}$Pb | $^{186}$Bi | $^{187}$Po | $^{188}$At |
| 104 | $^{179}$Re | $^{180}$Os | $^{181}$Ir | $^{182}$Pt | $^{183}$Au | $^{184}$Hg | $^{185}$Tl | $^{186}$Pb | $^{187}$Bi | $^{188}$Po | |
| 105 | $^{180}$Re | $^{181}$Os | $^{182}$Ir | $^{183}$Pt | $^{184}$Au | $^{185}$Hg | $^{186}$Tl | $^{187}$Pb | $^{188}$Bi | $^{189}$Po | $^{190}$At | 86 |
| 106 | $^{181}$Re | $^{182}$Os | $^{183}$Ir | $^{184}$Pt | $^{185}$Au | $^{186}$Hg | $^{187}$Tl | $^{188}$Pb | $^{189}$Bi | $^{190}$Po | $^{191}$At | Rn |
| 107 | $^{182}$Re | $^{183}$Os | $^{184}$Ir | $^{185}$Pt | $^{186}$Au | $^{187}$Hg | $^{188}$Tl | $^{189}$Pb | $^{190}$Bi | $^{191}$Po | $^{192}$At | $^{193}$Rn |
| 108 | $^{183}$Re | $^{184}$Os | $^{185}$Ir | $^{186}$Pt | $^{187}$Au | $^{188}$Hg | $^{189}$Tl | $^{190}$Pb | $^{191}$Bi | $^{192}$Po | $^{193}$At | $^{194}$Rn | 87 |
| 109 | $^{184}$Re | $^{185}$Os | $^{186}$Ir | $^{187}$Pt | $^{188}$Au | $^{189}$Hg | $^{190}$Tl | $^{191}$Pb | $^{192}$Bi | $^{193}$Po | $^{194}$At | $^{195}$Rn | Fr |
| 110 | $^{185}$Re | $^{186}$Os | $^{187}$Ir | $^{188}$Pt | $^{189}$Au | $^{190}$Hg | $^{191}$Tl | $^{192}$Pb | $^{193}$Bi | $^{194}$Po | $^{195}$At | $^{196}$Rn | $^{197}$Fr |
| 111 | $^{186}$Re | $^{187}$Os | $^{188}$Ir | $^{189}$Pt | $^{190}$Au | $^{191}$Hg | $^{192}$Tl | $^{193}$Pb | $^{194}$Bi | $^{195}$Po | $^{196}$At | $^{197}$Rn | $^{198}$Fr | 88 |
| 112 | $^{187}$Re | $^{188}$Os | $^{189}$Ir | $^{190}$Pt | $^{191}$Au | $^{192}$Hg | $^{193}$Tl | $^{194}$Pb | $^{195}$Bi | $^{196}$Po | $^{197}$At | $^{198}$Rn | $^{199}$Fr | Ra | 89 |
| 113 | $^{188}$Re | $^{189}$Os | $^{190}$Ir | $^{191}$Pt | $^{192}$Au | $^{193}$Hg | $^{194}$Tl | $^{195}$Pb | $^{196}$Bi | $^{197}$Po | $^{198}$At | $^{199}$Rn | $^{200}$Fr | $^{201}$Ra | Ac |
| 114 | $^{189}$Re | $^{190}$Os | $^{191}$Ir | $^{192}$Pt | $^{193}$Au | $^{194}$Hg | $^{195}$Tl | $^{196}$Pb | $^{197}$Bi | $^{198}$Po | $^{199}$At | $^{200}$Rn | $^{201}$Fr | $^{202}$Ra | $^{203}$Ac |
| 115 | $^{190}$Re | $^{191}$Os | $^{192}$Ir | $^{193}$Pt | $^{194}$Au | $^{195}$Hg | $^{196}$Tl | $^{197}$Pb | $^{198}$Bi | $^{199}$Po | $^{200}$At | $^{201}$Rn | $^{202}$Fr | $^{203}$Ra | $^{204}$Ac |
| 116 | $^{191}$Re | $^{192}$Os | $^{193}$Ir | $^{194}$Pt | $^{195}$Au | $^{196}$Hg | $^{197}$Tl | $^{198}$Pb | $^{199}$Bi | $^{200}$Po | $^{201}$At | $^{202}$Rn | $^{203}$Fr | $^{204}$Ra | $^{205}$Ac |
| 117 | $^{192}$Re | $^{193}$Os | $^{194}$Ir | $^{195}$Pt | $^{196}$Au | $^{197}$Hg | $^{198}$Tl | $^{199}$Pb | $^{200}$Bi | $^{201}$Po | $^{202}$At | $^{203}$Rn | $^{204}$Fr | $^{205}$Ra | $^{206}$Ac |
| 118 | $^{193}$Re | $^{194}$Os | $^{195}$Ir | $^{196}$Pt | $^{197}$Au | $^{198}$Hg | $^{199}$Tl | $^{200}$Pb | $^{201}$Bi | $^{202}$Po | $^{203}$At | $^{204}$Rn | $^{205}$Fr | $^{206}$Ra | $^{207}$Ac |
| 119 | $^{194}$Re | $^{195}$Os | $^{196}$Ir | $^{197}$Pt | Au | $^{199}$Hg | $^{200}$Tl | $^{201}$Pb | $^{202}$Bi | $^{203}$Po | $^{204}$At | $^{205}$Rn | $^{206}$Fr | $^{207}$Ra | $^{208}$Ac |
| 120 | $^{195}$Re | $^{196}$Os | $^{197}$Ir | $^{198}$Pt | $^{199}$Au | $^{200}$Hg | $^{201}$Tl | $^{202}$Pb | $^{203}$Bi | $^{204}$Po | $^{205}$At | $^{206}$Rn | $^{207}$Fr | $^{208}$Ra | $^{209}$Ac |
| 121 | $^{196}$Re | $^{197}$Os | $^{198}$Ir | $^{199}$Pt | $^{200}$Au | $^{201}$Hg | $^{202}$Tl | $^{203}$Pb | $^{204}$Bi | $^{205}$Po | $^{206}$At | $^{207}$Rn | $^{208}$Fr | $^{209}$Ra | $^{210}$Ac |
| 122 | $^{197}$Re | $^{198}$Os | $^{199}$Ir | $^{200}$Pt | $^{201}$Au | $^{202}$Hg | $^{203}$Tl | $^{204}$Pb | $^{205}$Bi | $^{206}$Po | $^{207}$At | $^{208}$Rn | $^{209}$Fr | $^{210}$Ra | $^{211}$Ac |
| 123 | $^{198}$Re | $^{199}$Os | $^{200}$Ir | $^{201}$Pt | $^{202}$Au | $^{203}$Hg | $^{204}$Tl | $^{205}$Pb | $^{206}$Bi | $^{207}$Po | $^{208}$At | $^{209}$Rn | $^{210}$Fr | $^{211}$Ra | $^{212}$Ac |
| 124 | $^{199}$Re | $^{200}$Os | $^{201}$Ir | $^{202}$Pt | $^{203}$Au | $^{204}$Hg | $^{205}$Tl | $^{206}$Pb | $^{207}$Bi | $^{208}$Po | $^{209}$At | $^{210}$Rn | $^{211}$Fr | $^{212}$Ra | $^{213}$Ac |
| | 125 | $^{201}$Os | $^{202}$Ir | $^{203}$Pt | $^{204}$Au | $^{205}$Hg | $^{206}$Tl | $^{207}$Pb | $^{208}$Bi | $^{209}$Po | $^{210}$At | $^{211}$Rn | $^{212}$Fr | $^{213}$Ra | $^{214}$Ac |
| | 126 | $^{202}$Os | $^{203}$Ir | $^{204}$Pt | $^{205}$Au | $^{206}$Hg | $^{207}$Tl | $^{208}$Pb | Bi | $^{210}$Po | $^{211}$At | $^{212}$Rn | $^{213}$Fr | $^{214}$Ra | $^{215}$Ac |
| | 127 | $^{203}$Os | $^{204}$Ir | $^{205}$Pt | $^{206}$Au | $^{207}$Hg | $^{208}$Tl | $^{209}$Pb | $^{210}$Bi | $^{211}$Po | $^{212}$At | $^{213}$Rn | $^{214}$Fr | $^{215}$Ra | $^{216}$Ac |
| | | 128 | $^{205}$Ir | $^{206}$Pt | $^{207}$Au | $^{208}$Hg | $^{209}$Tl | $^{210}$Pb | $^{211}$Bi | $^{212}$Po | $^{213}$At | $^{214}$Rn | $^{215}$Fr | $^{216}$Ra | $^{217}$Ac |
| | | | 129 | $^{207}$Pt | $^{208}$Au | $^{209}$Hg | $^{210}$Tl | $^{211}$Pb | $^{212}$Bi | $^{213}$Po | $^{214}$At | $^{215}$Rn | $^{216}$Fr | $^{217}$Ra | $^{218}$Ac |
| | | | 130 | $^{208}$Pt | $^{209}$Au | $^{210}$Hg | $^{211}$Tl | $^{212}$Pb | $^{213}$Bi | $^{214}$Po | $^{215}$At | $^{216}$Rn | $^{217}$Fr | $^{218}$Ra | $^{219}$Ac |
| | | | | 131 | $^{210}$Au | $^{211}$Hg | $^{212}$Tl | $^{213}$Pb | $^{214}$Bi | $^{215}$Po | $^{216}$At | $^{217}$Rn | $^{218}$Fr | $^{219}$Ra | $^{220}$Ac |
| | | | | | 132 | $^{212}$Hg | $^{213}$Tl | $^{214}$Pb | $^{215}$Bi | $^{216}$Po | $^{217}$At | $^{218}$Rn | $^{219}$Fr | $^{220}$Ra | $^{221}$Ac |
| | | | | | 133 | $^{213}$Hg | $^{214}$Tl | $^{215}$Pb | $^{216}$Bi | $^{217}$Po | $^{218}$At | $^{219}$Rn | $^{220}$Fr | $^{221}$Ra | $^{222}$Ac |
| | | | | | 134 | $^{214}$Hg | $^{215}$Tl | $^{216}$Pb | $^{217}$Bi | $^{218}$Po | $^{219}$At | $^{220}$Rn | $^{221}$Fr | $^{222}$Ra | $^{223}$Ac |
| | | | | | 135 | $^{215}$Hg | $^{216}$Tl | $^{217}$Pb | $^{218}$Bi | $^{219}$Po | $^{220}$At | $^{221}$Rn | $^{222}$Fr | $^{223}$Ra | $^{224}$Ac |
| | | | | | 136 | $^{216}$Hg | $^{217}$Tl | $^{218}$Pb | $^{219}$Bi | $^{220}$Po | $^{221}$At | Rn | $^{223}$Fr | $^{224}$Ra | $^{225}$Ac |
| | | | | | | 137 | | $^{219}$Pb | $^{220}$Bi | $^{221}$Po | $^{222}$At | $^{223}$Rn | $^{224}$Fr | $^{225}$Ra | $^{226}$Ac |
| | | | | | | | 138 | $^{220}$Pb | $^{221}$Bi | $^{222}$Po | $^{223}$At | $^{224}$Rn | $^{225}$Fr | $^{226}$Ra | $^{227}$Ac |
| | | | | | | | | 139 | $^{222}$Bi | $^{223}$Po | $^{224}$At | $^{225}$Rn | $^{226}$Fr | $^{227}$Ra | $^{228}$Ac |
| | | | | | | | | 140 | $^{223}$Bi | $^{224}$Po | $^{225}$At | $^{226}$Rn | $^{227}$Fr | $^{228}$Ra | $^{229}$Ac |
| | | | | | | | | 141 | $^{224}$Bi | $^{225}$Po | $^{226}$At | $^{227}$Rn | $^{228}$Fr | $^{229}$Ra | $^{230}$Ac |
| | | | | | | | | | 142 | $^{226}$Po | $^{227}$At | $^{228}$Rn | $^{229}$Fr | $^{230}$Ra | $^{231}$Ac |
| | | | | | | | | | 143 | $^{227}$Po | $^{228}$At | $^{229}$Rn | $^{230}$Fr | $^{231}$Ra | $^{232}$Ac |
| | | | | | | | | | | 144 | $^{229}$At | $^{230}$Rn | $^{231}$Fr | $^{232}$Ra | $^{233}$Ac |
| | | | | | | | | | | 145 | $^{230}$At | $^{231}$Rn | $^{232}$Fr | $^{233}$Ra | $^{234}$Ac |
| | | | | | | | | | | | 146 | $^{232}$Rn | $^{233}$Fr | $^{234}$Ra | $^{235}$Ac |
| | | | | | | | | | | | | | 147 | | $^{236}$Ac |
| | | | | | | | | | | | | | | 148 | |

## Isotopes for elements 90-104

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Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 90 |
| n ↓ | Th |
| 117 | $^{207}$Th |
| 118 | $^{208}$Th | 91 |
| 119 | $^{209}$Th | Pa |
| 120 | $^{210}$Th | $^{211}$Pa | 92 |
| 121 | $^{211}$Th | $^{212}$Pa | U |
| 122 | $^{212}$Th | $^{213}$Pa | $^{214}$U |
| 123 | $^{213}$Th | $^{214}$Pa | $^{215}$U |
| 124 | $^{214}$Th | $^{215}$Pa | $^{216}$U | 93 |
| 125 | $^{215}$Th | $^{216}$Pa | $^{217}$U | Np | 94 |
| 126 | $^{216}$Th | $^{217}$Pa | $^{218}$U | $^{219}$Np | Pu | 95 |
| 127 | $^{217}$Th | $^{218}$Pa | $^{219}$U | $^{220}$Np | | Am |
| 128 | $^{218}$Th | $^{219}$Pa | | | | $^{223}$Am |
| 129 | $^{219}$Th | $^{220}$Pa | $^{221}$U | $^{222}$Np | | |
| 130 | $^{220}$Th | $^{221}$Pa | $^{222}$U | $^{223}$Np | | |
| 131 | $^{221}$Th | $^{222}$Pa | $^{223}$U | $^{224}$Np | | $^{226}$Am | 96 | 97 |
| 132 | $^{222}$Th | $^{223}$Pa | $^{224}$U | $^{225}$Np | | | Cm | Bk |
| 133 | $^{223}$Th | $^{224}$Pa | $^{225}$U | $^{226}$Np | | | | $^{230}$Bk |
| 134 | $^{224}$Th | $^{225}$Pa | $^{226}$U | $^{227}$Np | $^{228}$Pu | $^{229}$Am | | |
| 135 | $^{225}$Th | $^{226}$Pa | $^{227}$U | $^{228}$Np | $^{229}$Pu | $^{230}$Am | | |
| 136 | $^{226}$Th | $^{227}$Pa | $^{228}$U | $^{229}$Np | $^{230}$Pu | | | $^{233}$Bk |
| 137 | $^{227}$Th | $^{228}$Pa | $^{229}$U | $^{230}$Np | $^{231}$Pu | $^{232}$Am | $^{233}$Cm | $^{234}$Bk | 98 |
| 138 | $^{228}$Th | $^{229}$Pa | $^{230}$U | $^{231}$Np | $^{232}$Pu | $^{233}$Am | $^{234}$Cm | | Cf | 99 |
| 139 | $^{229}$Th | $^{230}$Pa | $^{231}$U | $^{232}$Np | $^{233}$Pu | $^{234}$Am | $^{235}$Cm | $^{236}$Bk | $^{237}$Cf | Es | 100 |
| 140 | Th | $^{231}$Pa | U | $^{233}$Np | $^{234}$Pu | $^{235}$Am | $^{236}$Cm | | $^{238}$Cf | | Fm |
| 141 | $^{231}$Th | $^{232}$Pa | U | $^{234}$Np | $^{235}$Pu | $^{236}$Am | $^{237}$Cm | $^{238}$Bk | $^{239}$Cf | $^{240}$Es | $^{241}$Fm | 101 |
| 142 | Th | $^{233}$Pa | U | $^{235}$Np | $^{236}$Pu | $^{237}$Am | $^{238}$Cm | | $^{240}$Cf | $^{241}$Es | $^{242}$Fm | Md |
| 143 | $^{233}$Th | $^{234}$Pa | U | $^{236}$Np | $^{237}$Pu | $^{238}$Am | $^{239}$Cm | $^{240}$Bk | $^{241}$Cf | $^{242}$Es | $^{243}$Fm | $^{244}$Md |
| 144 | $^{234}$Th | $^{235}$Pa | U | Np | Pu | $^{239}$Am | $^{240}$Cm | $^{241}$Bk | $^{242}$Cf | $^{243}$Es | $^{244}$Fm | $^{245}$Md | 102 |
| 145 | $^{235}$Th | $^{236}$Pa | $^{237}$U | $^{238}$Np | Pu | $^{240}$Am | $^{241}$Cm | $^{242}$Bk | $^{243}$Cf | $^{244}$Es | $^{245}$Fm | $^{246}$Md | No |
| 146 | $^{236}$Th | $^{237}$Pa | U | $^{239}$Np | Pu | Am | $^{242}$Cm | $^{243}$Bk | $^{244}$Cf | $^{245}$Es | $^{246}$Fm | $^{247}$Md | | 103 |
| 147 | $^{237}$Th | $^{238}$Pa | U | $^{240}$Np | Pu | $^{242}$Am | $^{243}$Cm | $^{244}$Bk | $^{245}$Cf | $^{246}$Es | $^{247}$Fm | $^{248}$Md | $^{249}$No | Lr | 104 |
| 148 | $^{238}$Th | $^{239}$Pa | U | $^{241}$Np | Pu | $^{243}$Am | $^{244}$Cm | $^{245}$Bk | $^{246}$Cf | $^{247}$Es | $^{248}$Fm | $^{249}$Md | $^{250}$No | $^{251}$Lr | Rf |
| 149 | | | $^{241}$U | $^{242}$Np | $^{243}$Pu | $^{244}$Am | $^{245}$Cm | $^{246}$Bk | $^{247}$Cf | $^{248}$Es | $^{249}$Fm | $^{250}$Md | $^{251}$No | $^{252}$Lr | $^{253}$Rf |
| | 150 | | $^{242}$U | $^{243}$Np | Pu | $^{245}$Am | $^{246}$Cm | $^{247}$Bk | $^{248}$Cf | $^{249}$Es | $^{250}$Fm | $^{251}$Md | $^{252}$No | $^{253}$Lr | $^{254}$Rf |
| | | 151 | | $^{244}$Np | $^{245}$Pu | $^{246}$Am | $^{247}$Cm | $^{248}$Bk | $^{249}$Cf | $^{250}$Es | $^{251}$Fm | $^{252}$Md | $^{253}$No | $^{254}$Lr | $^{255}$Rf |
| | | | 152 | | $^{246}$Pu | $^{247}$Am | $^{248}$Cm | $^{249}$Bk | $^{250}$Cf | $^{251}$Es | $^{252}$Fm | $^{253}$Md | $^{254}$No | $^{255}$Lr | $^{256}$Rf |
| | | | | 153 | $^{247}$Pu | | $^{249}$Cm | $^{250}$Bk | $^{251}$Cf | $^{252}$Es | $^{253}$Fm | $^{254}$Md | $^{255}$No | $^{256}$Lr | $^{257}$Rf |
| | | | | | 154 | | $^{250}$Cm | $^{251}$Bk | $^{252}$Cf | $^{253}$Es | $^{254}$Fm | $^{255}$Md | $^{256}$No | $^{257}$Lr | $^{258}$Rf |
| | | | | | | 155 | $^{251}$Cm | $^{252}$Bk | $^{253}$Cf | $^{254}$Es | $^{255}$Fm | $^{256}$Md | $^{257}$No | $^{258}$Lr | $^{259}$Rf |
| | | | | | | 156 | | $^{253}$Bk | $^{254}$Cf | $^{255}$Es | $^{256}$Fm | $^{257}$Md | $^{258}$No | $^{259}$Lr | $^{260}$Rf |
| | | | | | | | 157 | | $^{255}$Cf | $^{256}$Es | $^{257}$Fm | $^{258}$Md | $^{259}$No | $^{260}$Lr | $^{261}$Rf |
| | | | | | | | | 158 | $^{256}$Cf | $^{257}$Es | $^{258}$Fm | $^{259}$Md | $^{260}$No | $^{261}$Lr | $^{262}$Rf |
| | | | | | | | | | 159 | | $^{259}$Fm | $^{260}$Md | | $^{262}$Lr | $^{263}$Rf |
| | | | | | | | | | | 160 | $^{260}$Fm | | $^{262}$No | | |
| | | | | | | | | | | | 161 | | | $^{264}$Lr | $^{265}$Rf |
| | | | | | | | | | | | | 162 | | | |
| | | | | | | | | | | | | | 163 | $^{266}$Lr | $^{267}$Rf |
| | | | | | | | | | | | | | | 164 | |

## Isotopes for elements 105-118

← Previous | Next →Go to Unitized table (all elements)Go to Periodic table
Half-lives (example: Gd) :
| $^{145}$Gd | < 1 day |
| $^{149}$Gd | 1–10 days |
| $^{146}$Gd | 10–100 days |
| $^{153}$Gd | 100 days–10 a |
| $^{148}$Gd | 10–10,000 a |
| $^{150}$Gd | 10 ka–700 Ma |
| $^{152}$Gd | > 700 Ma |
| $^{158}$Gd | Stable |
| Z → | 105 |
| n ↓ | Db |
| 150 | $^{255}$Db | 106 |
| 151 | $^{256}$Db | Sg | 107 |
| 152 | $^{257}$Db | $^{258}$Sg | Bh |
| 153 | $^{258}$Db | $^{259}$Sg | $^{260}$Bh | 108 |
| 154 | $^{259}$Db | $^{260}$Sg | $^{261}$Bh | Hs | 109 |
| 155 | $^{260}$Db | $^{261}$Sg | $^{262}$Bh | $^{263}$Hs | Mt | 110 |
| 156 | $^{261}$Db | $^{262}$Sg | | $^{264}$Hs | | Ds |
| 157 | $^{262}$Db | $^{263}$Sg | $^{264}$Bh | $^{265}$Hs | $^{266}$Mt | $^{267}$Ds |
| 158 | $^{263}$Db | $^{264}$Sg | $^{265}$Bh | $^{266}$Hs | | |
| 159 | | $^{265}$Sg | $^{266}$Bh | $^{267}$Hs | $^{268}$Mt | $^{269}$Ds | 111 |
| 160 | | $^{266}$Sg | $^{267}$Bh | $^{268}$Hs | | $^{270}$Ds | Rg |
| 161 | $^{266}$Db | $^{267}$Sg | | $^{269}$Hs | $^{270}$Mt | $^{271}$Ds | $^{272}$Rg |
| 162 | $^{267}$Db | $^{268}$Sg | | $^{270}$Hs | | | | 112 |
| 163 | $^{268}$Db | $^{269}$Sg | $^{270}$Bh | $^{271}$Hs | | $^{273}$Ds | $^{274}$Rg | Cn | 113 |
| 164 | | | $^{271}$Bh | $^{272}$Hs | | | | | Nh |
| 165 | $^{270}$Db | $^{271}$Sg | $^{272}$Bh | $^{273}$Hs | $^{274}$Mt | $^{275}$Ds | | $^{277}$Cn | $^{278}$Nh |
| | 166 | | | | $^{275}$Mt | $^{276}$Ds | | | |
| | 167 | | $^{274}$Bh | $^{275}$Hs | $^{276}$Mt | $^{277}$Ds | $^{278}$Rg | | |
| | | 168 | | | $^{277}$Mt | | $^{279}$Rg | | | 114 |
| | | 169 | | $^{277}$Hs | $^{278}$Mt | $^{279}$Ds | $^{280}$Rg | $^{281}$Cn | $^{282}$Nh | Fl | 115 |
| | | 170 | | | | $^{280}$Ds | $^{281}$Rg | $^{282}$Cn | $^{283}$Nh | $^{284}$Fl | Mc | 116 |
| | | 171 | | | | $^{281}$Ds | $^{282}$Rg | $^{283}$Cn | $^{284}$Nh | $^{285}$Fl | $^{286}$Mc | Lv |
| | | | 172 | | | | | $^{284}$Cn | $^{285}$Nh | $^{286}$Fl | $^{287}$Mc | $^{288}$Lv | 117 |
| | | | | 173 | | | | $^{285}$Cn | $^{286}$Nh | $^{287}$Fl | $^{288}$Mc | | Ts | 118 |
| | | | | | 174 | | | | | $^{288}$Fl | $^{289}$Mc | $^{290}$Lv | | Og |
| | | | | | | 175 | | | | $^{289}$Fl | $^{290}$Mc | $^{291}$Lv | | |
| | | | | | | | 176 | | | | | $^{292}$Lv | $^{293}$Ts | $^{294}$Og |
| | | | | | | | | 177 | | | | $^{293}$Lv | $^{294}$Ts | |