Daftar unsur menurut nomor atom
Daftar

| 0 | 1 | 2 | 3 | 4 |
| --- | --- | --- | --- | --- |
| Logam alkali | Alkali tanah | Lantanida | Aktinida | Logam transisi |
| Logam | Metaloid | Nonlogam | Halogen | Gas mulia |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

| No.Atom | Nama | Lambang | Periode, Golongan | Massa (g/Mol) | Massa jenis (g/cm³) pada 20°C | Titiklebur  (°C) | Titikdidih  (°C) | Tahunpenemuan | Penemu |
| 1 | Hidrogen | H | 1; 1 | 1,00794(7)2 3 4 | 0,084 g/l | −259,1 | −252,9 | 1766 | Cavendish |
| 2 | Helium | He | 1; 18 | 4,002602(2)2 4 | 0,17 g/l | −272,2 | −268,9 | 1895 | Ramsay dan Cleve |
| 3 | Litium | Li | 2; 1 | 6,941(2)2 3 4 5 | 0,53 | 180,5 | 1317 | 1817 | Arfwedson |
| 4 | Berilium | Be | 2; 2 | 9,012182(3) | 1,85 | 1278 | 2970 | 1797 | Vauquelin |
| 5 | Boron | B | 2; 13 | 10,811(7)2 3 4 | 2,46 | 2300 | 2550 | 1808 | Davy dan Gay-Lussac |
| 6 | Karbon | C | 2; 14 | 12,0107(8)2 4 | 3,51 | 3550 | 4827 | 3750 SM | orang Mesir Kuno dan orang Sumeria |
| 7 | Nitrogen | N | 2; 15 | 14,0067(2)2 4 | 1,17 g/l | −209,9 | −195,8 | 1772 | Rutherford |
| 8 | Oksigen | O | 2; 16 | 15,9994(3)2 4 | 1,33 g/l | −218,4 | −182,9 | 1774 | Priestly dan Scheele |
| 9 | Fluorin | F | 2; 17 | 18,9984032(5) | 1,58 g/l | −219,6 | −188,1 | 1886 | Moissan |
| 10 | Neon | Ne | 2; 18 | 20,1797(6)2 3 | 0,84 g/l | −248,7 | −246,1 | 1898 | Ramsay dan Travers |
| 11 | Natrium | Na | 3; 1 | 22,98976928(2) | 0,97 | 97,8 | 892 | 1807 | Davy |
| 12 | Magnesium | Mg | 3; 2 | 24,3050(6) | 1,74 | 648,8 | 1107 | 1755 | Black |
| 13 | Alumunium | Al | 3; 13 | 26,9815386(8) | 2,70 | 660,5 | 2467 | 1825 | Ørsted |
| 14 | Silikon | Si | 3; 14 | 28,0855(3)4 | 2,33 | 1410 | 2355 | 1824 | Berzelius |
| 15 | Fosforus | P | 3; 15 | 30,973762(2) | 1,82 | 44 (P4) | 280 (P4) | 1669 | Brand |
| 16 | Belerang | S | 3; 16 | 32,065(5)2 4 | 2,06 | 113 | 444,7 | sebelum 2000 SM | orang Tionghoa |
| 17 | Klorin | Cl | 3; 17 | 35,453(2)2 3 4 | 2,95 g/l | −34,6 | −101 | 1774 | Scheele |
| 18 | Argon | Ar | 3; 18 | 39,948(1)2 4 | 1,66 g/l | −189,4 | −185,9 | 1894 | Ramsay dan Rayleigh |
| 19 | Kalium | K | 4; 1 | 39,0983(1) | 0,86 | 63,7 | 774 | 1807 | Davy |
| 20 | Kalsium | Ca | 4; 2 | 40,078(4)2 | 1,54 | 839 | 1487 | 1808 | Davy |
| 21 | Skandium | Sc | 4; 3 | 44,955912(6) | 2,99 | 1539 | 2832 | 1879 | Nilson |
| 22 | Titanium | Ti | 4; 4 | 47,867(1) | 4,51 | 1660 | 3260 | 1791 | Gregor dan Klaproth |
| 23 | Vanadium | V | 4; 5 | 50,9415(1) | 6,09 | 1890 | 3380 | 1801 | del Río |
| 24 | Kromium | Cr | 4; 6 | 51,9961(6) | 7,14 | 1857 | 2482 | 1797 | Vauquelin |
| 25 | Mangan | Mn | 4; 7 | 54,938045(5) | 7,44 | 1244 | 2097 | 1774 | Gahn |
| 26 | Besi | Fe | 4; 8 | 55,845(2) | 7,87 | 1535 | 2750 | sebelum 5000 SM | tak diketahui |
| 27 | Kobalt | Co | 4; 9 | 58,933195(5) | 8,89 | 1495 | 2870 | 1735 | Brandt |
| 28 | Nikel | Ni | 4; 10 | 58,6934(2) | 8,91 | 1453 | 2732 | 1751 | Cronstedt |
| 29 | Tembaga | Cu | 4; 11 | 63,546(3)4 | 8,92 | 1083,5 | 2595 | 9000 SM | orang Timur Tengah |
| 30 | Seng | Zn | 4; 12 | 65,409(4) | 7,14 | 419,6 | 907 | sebelum 1000 SM | ahli metalurgi India |
| 31 | Galium | Ga | 4; 13 | 69,723(1) | 5,91 | 29,8 | 2403 | 1875 | Lecoq de Boisbaudran |
| 32 | Germanium | Ge | 4; 14 | 72,64(1) | 5,32 | 937,4 | 2830 | 1886 | Winkler |
| 33 | Arsen | As | 4; 15 | 74,92160(2) | 5,72 | 615 | 615 (subl.) | sebelum 815 M | alkemis Arab |
| 34 | Selenium | Se | 4; 16 | 78,96(3)4 | 4,82 | 217 | 685 | 1817 | Berzelius |
| 35 | Bromin | Br | 4; 17 | 79,904(1) | 3,14 | −7,3 | 58,8 | 1826 | Balard |
| 36 | Kripton | Kr | 4; 18 | 83,798(2)2 3 | 3,48 g/l | −156,6 | −152,3 | 1898 | Ramsay dan Travers |
| 37 | Rubidium | Rb | 5; 1 | 85,4678(3)2 | 1,53 | 39 | 688 | 1861 | Bunsen dan Kirchhoff |
| 38 | Stronsium | Sr | 5; 2 | 87,62(1)2 4 | 2,63 | 769 | 1384 | 1790 | Crawford |
| 39 | Itrium | Y | 5; 3 | 88,90585(2) | 4,47 | 1523 | 3337 | 1794 | Gadolin |
| 40 | Zirkonium | Zr | 5; 4 | 91,224(2)2 | 6,51 | 1852 | 4377 | 1789 | Klaproth |
| 41 | Niobium | Nb | 5; 5 | 92,906 38(2) | 8,58 | 2468 | 4927 | 1801 | Hatchett |
| 42 | Molibdenum | Mo | 5; 6 | 95,94(2)2 | 10,28 | 2617 | 5560 | 1778 | Scheele |
| 43 | Teknesium | Tc | 5; 7 | [98,9063]1 | 11,49 | 2172 | 5030 | 1937 | Perrier dan Segrè |
| 44 | Rutenium | Ru | 5; 8 | 101,07(2)2 | 12,45 | 2310 | 3900 | 1844 | Klaus |
| 45 | Rodium | Rh | 5; 9 | 102,90550(2) | 12,41 | 1966 | 3727 | 1803 | Wollaston |
| 46 | Paladium | Pd | 5; 10 | 106,42(1)2 | 12,02 | 1552 | 3140 | 1803 | Wollaston |
| 47 | Perak | Ag | 5; 11 | 107,8682(2)2 | 10,49 | 961,9 | 2212 | sebelum 5000 SM | tak diketahui |
| 48 | Kadmium | Cd | 5; 12 | 112,411(8)2 | 8,64 | 321 | 765 | 1817 | Strohmeyer dan Hermann |
| 49 | Indium | In | 5; 13 | 114,818(3) | 7,31 | 156,2 | 2080 | 1863 | Reich dan Richter |
| 50 | Timah | Sn | 5; 14 | 118,710(7)2 | 7,29 | 232 | 2270 | protosejarah, sekitar abad ke-35 SM | tak diketahui |
| 51 | Antimon | Sb | 5; 15 | 121,760(1)2 | 6,69 | 630,7 | 1750 | sebelum 815 M | alkemis Arab |
| 52 | Telurium | Te | 5; 16 | 127,60(3)2 | 6,25 | 449,6 | 990 | 1782 | von Reichenstein |
| 53 | Iodin | I | 5; 17 | 126,90447(3) | 4,94 | 113,5 | 184,4 | 1811 | Courtois |
| 54 | Xenon | Xe | 5; 18 | 131,293(6)2 3 | 4,49 g/l | −111,9 | −107 | 1898 | Ramsay dan Travers |
| 55 | Sesium | Cs | 6; 1 | 132,9054519(2) | 1,90 | 28,4 | 690 | 1860 | Kirchhoff dan Bunsen |
| 56 | Barium | Ba | 6; 2 | 137,327(7) | 3,65 | 725 | 1640 | 1808 | Davy |
| 57 | Lantanum | La | 6 | 138,90547(7)2 | 6,16 | 920 | 3454 | 1839 | Mosander |
| 58 | Serium | Ce | 6 | 140,116(1)2 | 6,77 | 798 | 3257 | 1803 | von Hisinger dan Berzelius |
| 59 | Praseodimium | Pr | 6 | 140,90765(2) | 6,48 | 931 | 3212 | 1895 | von Welsbach |
| 60 | Neodimium | Nd | 6 | 144,242(3)2 | 7,00 | 1010 | 3127 | 1895 | von Welsbach |
| 61 | Prometium | Pm | 6 | [146,9151]1 | 7,22 | 1080 | 2730 | 1945 | Marinsky dan Glendenin |
| 62 | Samarium | Sm | 6 | 150,36(2)2 | 7,54 | 1072 | 1778 | 1879 | Lecoq de Boisbaudran |
| 63 | Europium | Eu | 6 | 151,964(1)2 | 5,25 | 822 | 1597 | 1901 | Demarçay |
| 64 | Gadolinium | Gd | 6 | 157,25(3)2 | 7,89 | 1311 | 3233 | 1880 | de Marignac |
| 65 | Terbium | Tb | 6 | 158,92535(2) | 8,25 | 1360 | 3041 | 1843 | Mosander |
| 66 | Disprosium | Dy | 6 | 162,500(1)2 | 8,56 | 1409 | 2335 | 1886 | Lecoq de Boisbaudran |
| 67 | Holmium | Ho | 6 | 164,93032(2) | 8,78 | 1470 | 2720 | 1878 | Soret |
| 68 | Erbium | Er | 6 | 167,259(3)2 | 9,05 | 1522 | 2510 | 1842 | Mosander |
| 69 | Tulium | Tm | 6 | 168,93421(2) | 9,32 | 1545 | 1727 | 1879 | Cleve |
| 70 | Iterbium | Yb | 6 | 173,04(3)2 | 6,97 | 824 | 1193 | 1878 | de Marignac |
| 71 | Lutesium | Lu | 6; 3 | 174,967(1)2 | 9,84 | 1656 | 3315 | 1907 | Urbain |
| 72 | Hafnium | Hf | 6; 4 | 178,49(2) | 13,31 | 2150 | 5400 | 1923 | Coster dan de Hevesy |
| 73 | Tantalum | Ta | 6; 5 | 180,9479(1) | 16,68 | 2996 | 5425 | 1802 | Ekeberg |
| 74 | Wolfram | W | 6; 6 | 183,84(1) | 19,26 | 3407 | 5927 | 1783 | Elhuyar |
| 75 | Renium | Re | 6; 7 | 186,207(1) | 21,03 | 3180 | 5627 | 1925 | Noddack; Tacke dan Berg |
| 76 | Osmium | Os | 6; 8 | 190,23(3)2 | 22,61 | 3045 | 5027 | 1803 | Tennant |
| 77 | Iridium | Ir | 6; 9 | 192,217(3) | 22,65 | 2410 | 4130 | 1803 | Tennant |
| 78 | Platina | Pt | 6; 10 | 195,084(9) | 21,45 | 1772 | 3827 | 1557 | Scaliger |
| 79 | Emas | Au | 6; 11 | 196,966569(4) | 19,32 | 1064,4 | 2940 | sebelum 6000 SM | orang Timur Tengah |
| 80 | Raksa | Hg | 6; 12 | 200,59(2) | 13,55 | −38,9 | 356,6 | sebelum 1500 SM | orang Mesir Kuno |
| 81 | Talium | Tl | 6; 13 | 204,3833(2) | 11,85 | 303,6 | 1457 | 1861 | Crookes |
| 82 | Timbal | Pb | 6; 14 | 207,2(1)2 4 | 11,34 | 327,5 | 1740 | 7000 SM | orang Timur Tengah |
| 83 | Bismut | Bi | 6; 15 | 208,98040(1) | 9,80 | 271,4 | 1560 | sebelum 1000 SM | alkemis Arab |
| 84 | Polonium | Po | 6; 16 | [208,9824]1 | 9,20 | 254 | 962 | 1898 | Marie dan Pierre Curie |
| 85 | Astatin | At | 6; 17 | [209,9871]1 |  |  |  | 1940 | Corson dan MacKenzie |
| 86 | Radon | Rn | 6; 18 | [222,0176]1 | 9,23 g/l | −71 | −61,8 | 1900 | Dorn |
| 87 | Fransium | Fr | 7; 1 | [223,0197]1 |  | 27 | 677 | 1939 | Perey |
| 88 | Radium | Ra | 7; 2 | [226,0254]1 | 5,50 | 700 | 1140 | 1898 | Marie dan Pierre Curie |
| 89 | Aktinium | Ac | 7 | [227,0278]1 | 10,07 | 1047 | 3197 | 1899 | Debierne |
| 90 | Torium | Th | 7 | 232,03806(2)1 2 | 11,72 | 1750 | 4787 | 1829 | Berzelius |
| 91 | Protaktinium | Pa | 7 | 231,03588(2)1 | 15,37 | 1554 | 4030 | 1917 | Soddy; Cranston dan Hahn |
| 92 | Uranium | U | 7 | 238,02891(3)1 2 3 | 18,97 | 1132,4 | 3818 | 1789 | Klaproth |
| 93 | Neptunium | Np | 7 | [237,0482]1 | 20,48 | 640 | 3902 | 1940 | McMillan dan Abelson |
| 94 | Plutonium | Pu | 7 | [244,0642]1 | 19,74 | 641 | 3327 | 1940 | Seaborg |
| 95 | Amerisium | Am | 7 | [243,0614]1 | 13,67 | 994 | 2607 | 1944 | Seaborg |
| 96 | Kurium | Cm | 7 | [247,0703]1 | 13,51 | 1340 |  | 1944 | Seaborg |
| 97 | Berkelium | Bk | 7 | [247,0703]1 | 13,25 | 986 |  | 1949 | Seaborg |
| 98 | Kalifornium | Cf | 7 | [251,0796]1 | 15,1 | 900 |  | 1950 | Seaborg |
| 99 | Einsteinium | Es | 7 | [252,0829]1 |  | 860 |  | 1952 | Seaborg |
| 100 | Fermium | Fm | 7 | [257,0951]1 |  |  |  | 1952 | Seaborg |
| 101 | Mendelevium | Md | 7 | [258,0986]1 |  |  |  | 1955 | Seaborg |
| 102 | Nobelium | No | 7 | [259,1009]1 |  |  |  | 1958 | Seaborg |
| 103 | Lawrensium | Lr | 7; 3 | [260,1053]1 |  |  |  | 1961 | Ghiorso |
| 104 | Ruterfordium | Rf | 7; 4 | [261,1087]1 |  |  |  | 1964/69 | Flyorov |
| 105 | Dubnium | Db | 7; 5 | [262,1138]1 |  |  |  | 1967/70 | Flyorov |
| 106 | Seaborgium | Sg | 7; 6 | [263,1182]1 |  |  |  | 1974 | Flyorov |
| 107 | Bohrium | Bh | 7; 7 | [262,1229]1 |  |  |  | 1976 | Oganessian |
| 108 | Hasium | Hs | 7; 8 | [265]1 |  |  |  | 1984 | GSI (*) |
| 109 | Meitnerium | Mt | 7; 9 | [266]1 |  |  |  | 1982 | GSI |
| 110 | Darmstadtium | Ds | 7; 10 | [269]1 |  |  |  | 1994 | GSI |
| 111 | Roentgenium | Rg | 7; 11 | [272]1 |  |  |  | 1994 | GSI |
| 112 | Kopernisium | Cn | 7; 12 | [285]1 |  |  |  | 1996 | GSI |
| 113 | Nihonium | Nh | 7; 13 | [286]1 |  |  |  | 2004 | RIKEN; JINR (*); LLNL (*) |
| 114 | Flerovium | Fl | 7; 14 | [289]1 |  |  |  | 1998 | JINR |
| 115 | Moskovium | Mc | 7; 15 | [289]1 |  |  |  | 2003 | JINR; LLNL |
| 116 | Livermorium | Lv | 7; 16 | [293]1 |  |  |  | 2000 | LBNL (*) |
| 117 | Tenesin | Ts | 7; 17 | [294]1 |  |  |  | 2009 | JINR; LLNL |
| 118 | Oganeson | Og | 7; 18 | [294]1 |  |  |  | 2002 | JINR; LLNL |
| 0 | 1 | 2 | 3 | 4 |
| --- | --- | --- | --- | --- |
| Logam alkali | Alkali tanah | Lantanida | Aktinida | Logam transisi |
| Logam | Metaloid | Nonlogam | Halogen | Gas mulia |