Fr
Францій
Z 87 223,0 г/мольЛужний метал Радіоактивний
| 197Fr | 110 | 197,011 | 10 250,0 | --- | 2,3 мс | (7/2-) | α→193At(100%) | 2013 |
| 198Fr | 111 | 198,0103 | 9 580,0 | --- | 15,0 мс | (3+) | α→194At(100%) | 2013 |
| 198mFr | 111 | 198,0103 | 9 580,0 | --- | 1,1 мс | (10-) | α→194At(100%) | 2013 |
| 199Fr | 112 | 199,0073 | 6 771,0 | --- | 6,6 мс | (1/2+) | α→195At(100%) β⁺→199Rn | 1999 |
| 199mFr | 112 | 199,0073 | 6 817,0 | --- | 6,5 мс | (7/2-) | α→195At(100%) β⁺→199Rn | 2013 |
| 199nFr | 112 | 199,0075 | 7 020,0 | --- | 2,2 мс | (13/2+) | α→195At(100%) β⁺→199Rn | 2013 |
| 200Fr | 113 | 200,0066 | 6 130,0 | --- | 47,5 мс | (3+) | α→196At(100%) β⁺→200Rn β⁺SF | 1995 |
| 200mFr | 113 | 200,0066 | 6 180,0 | --- | 190,0 мс | (10-) | α→196At(100%) γ→200Fr | 1996 |
| 200nFr | 113 | 200,0067 | 6 280,0 | --- | 790,0 нс | --- | γ→200Fr | 2014 |
| 201Fr | 114 | 201,0039 | 3 589,0 | --- | 62,8 мс | 9/2- | α→197At(100%) β⁺→201Rn | 1980 |
| 201mFr | 114 | 201,004 | 3 718,0 | --- | 24,0 мс | 1/2+ | α→197At(100%) | 2005 |
| 201nFr | 114 | 201,0042 | 3 879,0 | --- | 720,0 нс | 13/2+ | γ→201Fr(100%) | 2014 |
| 202Fr | 115 | 202,0033 | 3 102,0 | --- | 372,0 мс | 3+ | α→198At(100%) β⁺→202Rn | 1980 |
| 202mFr | 115 | 202,0036 | 3 359,0 | --- | 286,0 мс | 10- | α→198At(100%) γ→202Fr β⁺→202Rn | 1980 |
| 203Fr | 116 | 203,0009 | 876,0 | --- | 550,0 мс | 9/2- | α→199At(100%) β⁺→203Rn | 1967 |
| 203mFr | 116 | 203,0013 | 1 237,0 | --- | 43,0 мс | 1/2+ | γ→203Fr(80%) α→199At(20%) | 2013 |
| 203nFr | 116 | 203,0014 | 1 302,0 | --- | 370,0 нс | 13/2+ | γ→203Fr(100%) | 2013 |
| 204Fr | 117 | 204,0007 | 607,0 | --- | 1,75 с | 3+ | α→200At(96%) β⁺→204Rn | 1964 |
| 204mFr | 117 | 204,0007 | 658,0 | --- | 2,41 с | 7+ | α→200At(90%) β⁺→204Rn | 1967 |
| 204nFr | 117 | 204,001 | 934,0 | --- | 1,65 с | 10- | α→200At(53%) γ→204Fr(47%) | 1992 |
| 205Fr | 118 | 204,9986 | -1 310,0 | --- | 3,9 с | 9/2- | α→201At(98,5%) β⁺→205Rn(1,5%) | 1964 |
| 205mFr | 118 | 204,9992 | -766,0 | --- | 80,0 нс | 13/2+ | γ→205Fr(100%) | 2012 |
| 205nFr | 118 | 204,9992 | -701,0 | --- | 1,15 мс | (1/2+) | γ→205Fr(100%) | 2012 |
| 206Fr | 119 | 205,9987 | -1 247,0 | --- | --- | 3+ | α→202At(88,4%) β⁺→206Rn(11,6%) | 1964 |
| 206mFr | 119 | 205,9989 | -1 048,0 | --- | --- | 7+ | α→202At(84,7%) β⁺→206Rn γ→206Fr | 1964 |
| 206nFr | 119 | 205,9994 | -517,0 | --- | 700,0 мс | 10- | α→202At(13%) γ→206Fr | 1983 |
| 207Fr | 120 | 206,9969 | -2 849,0 | --- | 14,8 с | 9/2- | α→203At(95%) β⁺→207Rn | 1964 |
| 208Fr | 121 | 207,9971 | -2 665,0 | --- | 59,1 с | 7+ | α→204At(89%) β⁺→208Rn(11%) | 1964 |
| 208mFr | 121 | 207,998 | -1 839,0 | --- | 432,0 нс | 10- | γ→208Fr(100%) | 2009 |
| 209Fr | 122 | 208,9959 | -3 782,0 | --- | 50,5 с | 9/2- | α→205At(89%) β⁺→209Rn(11%) | 1964 |
| 209mFr | 122 | 209,0009 | 878,0 | --- | 420,0 нс | 45/2- | γ→209Fr(100%) | 2006 |
| 210Fr | 123 | 209,9964 | -3 344,0 | --- | 3,18 хв | 6+ | α→206At(71%) β⁺→210Rn | 1964 |
| 210mFr | 123 | 210,0012 | 1 073,0 | --- | 475,0 нс | (23+) | γ→210Fr(100%) | 2016 |
| 211Fr | 124 | 210,9956 | -4 140,0 | --- | 3,1 хв | 9/2- | α→207At(87%) β⁺→211Rn(13%) | 1964 |
| 211mFr | 124 | 210,9982 | -1 717,0 | --- | 146,0 нс | 29/2+ | γ→211Fr(100%) | 1986 |
| 211nFr | 124 | 211,0006 | 517,0 | --- | 124,5 нс | 45/2- | γ→211Fr(100%) | 1986 |
| 212Fr | 125 | 211,9962 | -3 516,0 | --- | 20,0 хв | 5+ | β⁺→212Rn(57%) α→208At(43%) | 1950 |
| 212mFr | 125 | 211,9979 | -1 965,0 | --- | 31,9 мкс | 11+ | γ→212Fr(100%) | 1977 |
| 212nFr | 125 | 211,9989 | -1 024,0 | --- | 604,0 нс | 15- | γ→212Fr(100%) | 1977 |
| 213Fr | 126 | 212,9962 | -3 554,0 | --- | 34,14 с | 9/2- | α→209At(99,44%) β⁺→213Rn(0,56%) | 1964 |
| 213mFr | 126 | 212,9979 | -1 964,0 | --- | 505,0 нс | 21/2- | γ→213Fr(100%) | 1971 |
| 213nFr | 126 | 212,9989 | -1 016,0 | --- | 238,0 нс | 29/2+ | γ→213Fr(100%) | 1971 |
| 214Fr | 127 | 213,999 | -958,0 | --- | 5,51 мс | (1-) | α→210At(100%) | 1967 |
| 214mFr | 127 | 213,9991 | -837,0 | --- | 3,35 мс | (8-) | α→210At(100%) | 1962 |
| 214nFr | 127 | 213,9997 | -320,0 | --- | 103,0 нс | (11+) | γ→214Fr(100%) | 1993 |
| 215Fr | 128 | 215,0003 | 318,0 | --- | 90,0 нс | 9/2- | α→211At(100%) | 1970 |
| 216Fr | 129 | 216,0032 | 2 971,0 | --- | 700,0 нс | (1-) | α→212At(100%) β⁺→216Rn | 1970 |
| 216mFr | 129 | 216,0034 | 3 190,0 | --- | 850,0 нс | (9-) | α→212At(100%) β⁺→216Rn | 2007 |
| 217Fr | 130 | 217,0046 | 4 315,0 | --- | 22,0 мкс | 9/2- | α→213At(100%) | 1968 |
| 218Fr | 131 | 218,0076 | 7 059,0 | --- | 1,4 мс | 1- | α→214At(100%) | 1949 |
| 218mFr | 131 | 218,0077 | 7 147,0 | --- | 21,9 мс | (8-) | α→214At(100%) γ→218Fr | 1982 |
| 219Fr | 132 | 219,0093 | 8 617,0 | --- | 22,5 мс | 9/2- | α→215At(100%) | 1948 |
| 220Fr | 133 | 220,0123 | 11 482,0 | --- | 27,4 с | 1+ | α→216At(~100%) β⁻→220Ra(0,35%) | 1948 |
| 221Fr | 134 | 221,0143 | 13 277,0 | --- | 4,8 хв | 5/2- | α→217At(~100%) β⁻→221Ra(0,005%) CD→207Tl(8,8е-11%) | 1947 |
| 222Fr | 135 | 222,0176 | 16 378,0 | --- | 14,2 хв | 2- | β⁻→222Ra(100%) | 1975 |
| 223Fr | 136 | 223,0197 | 18 382,3 | --- | 22,0 хв | 3/2- | β⁻→223Ra(~100%) α→219At(0,006%) | 1939 |
| 224Fr | 137 | 224,0233 | 21 749,0 | --- | 3,33 хв | 1- | β⁻→224Ra(100%) | 1969 |
| 225Fr | 138 | 225,0256 | 23 821,0 | --- | 3,95 хв | 3/2- | β⁻→225Ra(100%) | 1969 |
| 226Fr | 139 | 226,0295 | 27 521,0 | --- | 48,5 с | 1- | β⁻→226Ra(100%) | 1969 |
| 227Fr | 140 | 227,0319 | 29 682,0 | --- | 2,47 хв | 1/2+ | β⁻→227Ra(100%) | 1972 |
| 228Fr | 141 | 228,0358 | 33 384,0 | --- | 38,0 с | 2- | β⁻→228Ra(100%) | 1972 |
| 228mFr | 141 | 228,0369 | 34 390,0 | --- | 3,0 хв | --- | γ→228Fr β⁻→228Ra | 2008 |
| 229Fr | 142 | 229,0383 | 35 668,0 | --- | 50,2 с | (1/2+) | β⁻→229Ra(100%) | 1975 |
| 230Fr | 143 | 230,0424 | 39 487,0 | --- | 19,1 с | (2+) | β⁻→230Ra(100%) | 1987 |
| 231Fr | 144 | 231,0452 | 42 081,0 | --- | 17,6 с | (1/2+) | β⁻→231Ra(100%) | 1985 |
| 232Fr | 145 | 232,0495 | 46 073,0 | --- | 5,5 с | (5) | β⁻→232Ra(100%) β⁻SF | 1990 |
| 233Fr | 146 | 233,0525 | 48 920,0 | --- | 900,0 мс | (1/2+) | β⁻→233Ra(100%) β⁻n→232Ra | 2010 |