Isotop fransium

**[[Fransium]]** (**<sub>87</sub>Fr**) tidak memiliki satu pun isotop stabil, sehingga berat atom standarnya tidak dapat diberikan. Isotopnya yang paling stabil adalah 223Fr dengan waktu paruh 22 menit, terjadi dalam jumlah renik sebagai produk peluruhan antara dari <sup>235</sup>U.

Dari unsur-unsur yang isotop paling stabilnya telah diidentifikasi dengan pasti, fransium merupakan yang paling tidak stabil. Semua unsur dengan nomor atom 106 (seaborgium) atau lebih besar memiliki isotop paling stabil yang diketahui lebih pendek daripada fransium, tetapi karena unsur-unsur tersebut hanya memiliki jumlah isotop yang relatif kecil yang ditemukan, kemungkinan tetap bahwa isotop yang belum ditemukan dari unsur-unsur tersebut mungkin memiliki waktu paruh lebih lama.

## Daftar isotop

|-
| 199Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 112
| 199,00726(4)
| 16(7)&nbsp;mdtk
|
|
| 1/2+#
|
|-
| 200Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 113
| 200,00657(8)
| 24(10)&nbsp;mdtk
| α
| 196At
| 3+#
|
|-
| rowspan=2 style="text-indent:1em" | 200mFr
| rowspan=2|
| rowspan=2 colspan="3" style="text-indent:2em" | 60(110)&nbsp;keV
| rowspan=2|650(210)&nbsp;mdtk
| α
| 196At
| rowspan=2|10−#
| rowspan=2|
|-
| IT (langka)
| 200Fr
|-
| rowspan=2|201Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 114
| rowspan=2|201,00386(8)
| rowspan=2|67(3)&nbsp;mdtk
| α (99%)
| 197At
| rowspan=2|(9/2−)
| rowspan=2|
|-
| β+ (1%)
| 201Rn
|-
| rowspan=2|202Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 115
| rowspan=2|202,00337(5)
| rowspan=2|290(30)&nbsp;mdtk
| α (97%)
| 198At
| rowspan=2|(3+)
| rowspan=2|
|-
| β+ (3%)
| 202Rn
|-
| rowspan=2 style="text-indent:1em" | 202mFr
| rowspan=2|
| rowspan=2 colspan="3" style="text-indent:2em" | 330(90)#&nbsp;keV
| rowspan=2|340(40)&nbsp;mdtk
| α (97%)
| 198At
| rowspan=2|(10−)
| rowspan=2|
|-
| β+ (3%)
| 202Rn
|-
| rowspan=2|203Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 116
| rowspan=2|203,000925(17)
| rowspan=2|0,55(2)&nbsp;dtk
| α (95%)
| 199At
| rowspan=2|(9/2−)#
| rowspan=2|
|-
| β+ (5%)
| 203Rn
|-
| rowspan=2|204Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 117
| rowspan=2|204,000653(26)
| rowspan=2|1,7(3)&nbsp;dtk
| α (96%)
| 200At
| rowspan=2|(3+)
| rowspan=2|
|-
| β+ (4%)
| 204Rn
|-
| rowspan=2 style="text-indent:1em" | 204m1Fr
| rowspan=2|
| rowspan=2 colspan="3" style="text-indent:2em" | 50(4)&nbsp;keV
| rowspan=2|2,6(3)&nbsp;dtk
| α (90%)
| 200At
| rowspan=2|(7+)
| rowspan=2|
|-
| β+ (10%)
| 204Rn
|-
| style="text-indent:1em" | 204m2Fr
| 
| colspan="3" style="text-indent:2em" | 326(4)&nbsp;keV
| 1,7(6)&nbsp;dtk
|
|
| (10−)
|  
|-
| rowspan=2|205Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 118
| rowspan=2|204,998594(8)
| rowspan=2|3,80(3)&nbsp;dtk
| α (99%)
| 201At
| rowspan=2|(9/2−)
| rowspan=2|
|-
| β+ (1%)
| 205Rn
|-
| rowspan=2|206Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 119
| rowspan=2|205,99867(3)
| rowspan=2|~16 dtk
| β+ (58%)
| 206Rn
| rowspan=2|(2+, 3+)
| rowspan=2|
|-
| α (42%)
| 202At
|-
| style="text-indent:1em" | 206m1Fr
| 
| colspan="3" style="text-indent:2em" | 190(40)&nbsp;keV
| 15,9(1)&nbsp;dtk
|
|
| (7+)
|
|-
| style="text-indent:1em" | 206m2Fr
|
| colspan="3" style="text-indent:2em" | 730(40)&nbsp;keV
| 700(100)&nbsp;mdtk
|
|
| (10−)
|
|-
| rowspan=2|207Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 120
| rowspan=2|206,99695(5)
| rowspan=2|14,8(1)&nbsp;dtk
| α (95%)
| 203At
| rowspan=2|9/2−
| rowspan=2|
|-
| β+ (5%)
| 207Rn
|-
| rowspan=2|208Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 121
| rowspan=2|207,99714(5)
| rowspan=2|59,1(3)&nbsp;dtk
| α (90%)
| 204At
| rowspan=2|7+
| rowspan=2|
|-
| β+ (10%)
| 208Rn
|-
| rowspan=2|209Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 122
| rowspan=2|208,995954(16)
| rowspan=2|50,0(3)&nbsp;dtk
| α (89%)
| 205At
| rowspan=2|9/2−
| rowspan=2|
|-
| β+ (11%)
| 209Rn
|-
| rowspan=2|210Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 123
| rowspan=2|209,996408(24)
| rowspan=2|3,18(6)&nbsp;mnt
| α (60%)
| 206At
| rowspan=2|6+
| rowspan=2|
|-
| β+ (40%)
| 210Rn
|-
| rowspan=2|211Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 124
| rowspan=2|210,995537(23)
| rowspan=2|3,10(2)&nbsp;mnt
| α (80%)
| 207At
| rowspan=2|9/2−
| rowspan=2|
|-
| β+ (20%)
| 211Rn
|-
| rowspan=2|212Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 125
| rowspan=2|211,996202(28)
| rowspan=2|20,0(6)&nbsp;mnt
| β+ (57%)
| 212Rn
| rowspan=2|5+
| rowspan=2|
|-
| α (43%)
| 208At
|-
| rowspan=2|213Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 126
| rowspan=2|212,996189(8)
| rowspan=2|34,6(3)&nbsp;dtk
| α (99,45%)
| 209At
| rowspan=2|9/2−
| rowspan=2|
|-
| β+ (0,55%)
| 213Rn
|-
| 214Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 127
| 213,998971(9)
| 5,0(2)&nbsp;mdtk
| α
| 210At
| (1−)
|
|-
| style="text-indent:1em" | 214m1Fr
|
| colspan="3" style="text-indent:2em" | 123(6)&nbsp;keV
| 3,35(5)&nbsp;mdtk
| α
| 210At
| (8−)
|
|-
| style="text-indent:1em" | 214m2Fr
|
| colspan="3" style="text-indent:2em" | 638(6)&nbsp;keV
| 103(4)&nbsp;ndtk
|
|
| (11+)
|
|-
| style="text-indent:1em" | 214m3Fr
|
| colspan="3" style="text-indent:2em" | 6477+Y&nbsp;keV
| 108(7)&nbsp;ndtk
|
|
| (33+)
|
|-
| 215Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 128
| 215,000341(8)
| 86(5)&nbsp;ndtk
| α
| 211At
| 9/2−
|
|-
| rowspan=2|216Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 129
| rowspan=2|216,003198(15)
| rowspan=2|0,70(2) μdtk
| α
| 212At
| rowspan=2|(1−)
| rowspan=2|
|-
| β+ (2%)
| 216Rn
|-
| 217Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 130
| 217,004632(7)
| 16,8(19) μdtk
| α
| 213At
| 9/2−
|
|-
| 218Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 131
| 218,007578(5)
| 1,0(6)&nbsp;mdtk
| α
| 214At
| 1−
|
|-
| rowspan=2 style="text-indent:1em" | 218m1Fr
| rowspan=2|
| rowspan=2 colspan="3" style="text-indent:2em" | 86(4)&nbsp;keV
| rowspan=2|22,0(5)&nbsp;mdtk
| α
| 214At
| rowspan=2|
| rowspan=2|
|-
| IT (langka)
| 218Fr
|-
| style="text-indent:1em" | 218m2Fr
|
| colspan="3" style="text-indent:2em" | 200(150)#&nbsp;keV
|
|
|
| tinggi
|
|-
| 219Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 132
| 219,009252(8)
| 20(2)&nbsp;mdtk
| α
| 215At
| 9/2−
|
|-
| rowspan=2|220Fr
| rowspan=2|
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 133
| rowspan=2|220,012327(4)
| rowspan=2|27,4(3)&nbsp;dtk
| α (99,65%)
| 216At
| rowspan=2|1+
| rowspan=2|
|-
| β− (0,35%)
| 220Ra
|-
| rowspan=3|221Fr
| rowspan=3|
| rowspan=3 style="text-align:right" | 87
| rowspan=3 style="text-align:right" | 134
| rowspan=3|221,014255(5)
| rowspan=3|4,9(2)&nbsp;mnt
| α (99,9%)
| 217At
| rowspan=3|5/2−
| rowspan=3|Renik
|-
| β− (0,1%)
| 221Ra
|-
| CD (8,79%)
| 207Tl<sup>14</sup>C
|-
| 222Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 135
| 222,017552(23)
| 14,2(3)&nbsp;mnt
| β−
| 222Ra
| 2−
|
|-
| rowspan=2|223Fr
| rowspan=2|Aktinium K
| rowspan=2 style="text-align:right" | 87
| rowspan=2 style="text-align:right" | 136
| rowspan=2|223,0197359(26)
| rowspan=2|22,00(7)&nbsp;mnt
| β− (99,99%)
| 223Ra
| rowspan=2|3/2(−)
| rowspan=2|Renik
|-
| α (0,006%)
| 219At
|-
| 224Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 137
| 224,02325(5)
| 3,33(10)&nbsp;mnt
| β−
| 224Ra
| 1−
|
|-
| 225Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 138
| 225,02557(3)
| 4,0(2)&nbsp;mnt
| β−
| 225Ra
| 3/2−
|
|-
| 226Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 139
| 226,02939(11)
| 49(1)&nbsp;dtk
| β−
| 226Ra
| 1−
|
|-
| 227Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 140
| 227,03184(11)
| 2,47(3)&nbsp;mnt
| β−
| 227Ra
| 1/2+
|
|-
| 228Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 141
| 228,03573(22)#
| 38(1)&nbsp;dtk
| β−
| 228Ra
| 2−
|
|-
| 229Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 142
| 229,03845(4)
| 50,2(4)&nbsp;dtk
| β−
| 229Ra
| (1/2+)#
|
|-
| 230Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 143
| 230,04251(48)#
| 19,1(5)&nbsp;dtk
| β−
| 230Ra
|
|
|-
| 231Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 144
| 231,04544(50)#
| 17,6(6)&nbsp;dtk
| β−
| 231Ra
| (1/2+)#
|
|-
| 232Fr
|
| style="text-align:right" | 87
| style="text-align:right" | 145
| 232,04977(69)#
| 5(1)&nbsp;dtk
| β−
| 232Ra
|
|

## Referensi

* Massa isotop dari:
**
* Komposisi isotop dan massa atom standar dari:
**
**
* Data waktu paruh, spin, dan isomer dipilih dari sumber-sumber berikut.
**
**
**