Isotop fransium
Fransium (87Fr) 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 235U.
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) mdtk | | | 1/2+# |
| 200Fr | | style="text-align:right" | 87 | style="text-align:right" | 113 | 200,00657(8) | 24(10) mdtk | α | 196At | 3+# |
| rowspan=2 style="text-indent:1em" | 200mFr | rowspan=2| | rowspan=2 colspan="3" style="text-indent:2em" | 60(110) keV | rowspan=2|650(210) 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) 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) 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)# keV | rowspan=2|340(40) 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) 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) 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) keV | rowspan=2|2,6(3) 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) keV | 1,7(6) 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) 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) keV | 15,9(1) dtk | | | (7+) |
| style="text-indent:1em" | 206m2Fr | | colspan="3" style="text-indent:2em" | 730(40) keV | 700(100) 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) 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) 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) 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) 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) 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) 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) 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) mdtk | α | 210At | (1−) |
| style="text-indent:1em" | 214m1Fr | | colspan="3" style="text-indent:2em" | 123(6) keV | 3,35(5) mdtk | α | 210At | (8−) |
| style="text-indent:1em" | 214m2Fr | | colspan="3" style="text-indent:2em" | 638(6) keV | 103(4) ndtk | | | (11+) |
| style="text-indent:1em" | 214m3Fr | | colspan="3" style="text-indent:2em" | 6477+Y keV | 108(7) ndtk | | | (33+) |
| 215Fr | | style="text-align:right" | 87 | style="text-align:right" | 128 | 215,000341(8) | 86(5) 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) mdtk | α | 214At | 1− |
| rowspan=2 style="text-indent:1em" | 218m1Fr | rowspan=2| | rowspan=2 colspan="3" style="text-indent:2em" | 86(4) keV | rowspan=2|22,0(5) mdtk | α | 214At | rowspan=2| | rowspan=2|
| IT (langka) | 218Fr
| style="text-indent:1em" | 218m2Fr | | colspan="3" style="text-indent:2em" | 200(150)# keV | | | | tinggi |
| 219Fr | | style="text-align:right" | 87 | style="text-align:right" | 132 | 219,009252(8) | 20(2) 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) 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) mnt | α (99,9%) | 217At | rowspan=3|5/2− | rowspan=3|Renik
| β− (0,1%) | 221Ra
| 222Fr | | style="text-align:right" | 87 | style="text-align:right" | 135 | 222,017552(23) | 14,2(3) 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) 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) mnt | β− | 224Ra | 1− |
| 225Fr | | style="text-align:right" | 87 | style="text-align:right" | 138 | 225,02557(3) | 4,0(2) mnt | β− | 225Ra | 3/2− |
| 226Fr | | style="text-align:right" | 87 | style="text-align:right" | 139 | 226,02939(11) | 49(1) dtk | β− | 226Ra | 1− |
| 227Fr | | style="text-align:right" | 87 | style="text-align:right" | 140 | 227,03184(11) | 2,47(3) mnt | β− | 227Ra | 1/2+ |
| 228Fr | | style="text-align:right" | 87 | style="text-align:right" | 141 | 228,03573(22)# | 38(1) dtk | β− | 228Ra | 2− |
| 229Fr | | style="text-align:right" | 87 | style="text-align:right" | 142 | 229,03845(4) | 50,2(4) dtk | β− | 229Ra | (1/2+)# |
| 230Fr | | style="text-align:right" | 87 | style="text-align:right" | 143 | 230,04251(48)# | 19,1(5) dtk | β− | 230Ra | |
| 231Fr | | style="text-align:right" | 87 | style="text-align:right" | 144 | 231,04544(50)# | 17,6(6) dtk | β− | 231Ra | (1/2+)# |
| 232Fr | | style="text-align:right" | 87 | style="text-align:right" | 145 | 232,04977(69)# | 5(1) 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.
Sumber dan atribusi
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