Cs
Цезій
Z 55 132,905 г/мольЛужний метал
| 133Cs | 78 | 132,9055 | -88 070,943 | 100,0% | Стабільний | 7/2+ | --- | 1921 |
| 111Cs | 56 | 110,9539 | -42 900,0 | --- | 1,0 мкс | (3/2+) | p→110Xe | --- |
| 112Cs | 57 | 111,9502 | -46 420,0 | --- | 490,0 мкс | (1+) | p→111Xe(~100%) α→108I(<0,26%) | 1994 |
| 113Cs | 58 | 112,9444 | -51 765,0 | --- | 16,94 мкс | (3/2+) | p→112Xe(100%) | 1984 |
| 114Cs | 59 | 113,9413 | -54 690,0 | --- | 570,0 мс | (1+) | β⁺→114Xe(91,11%) β⁺p→113I(8,7%) β⁺α→110Te(0,19%) α→110I(0,018%) | 1978 |
| 115Cs | 60 | 114,9359 | -59 700,0 | --- | 1,4 с | (9/2+) | β⁺→115Xe(99,93%) β⁺p→114I(0,07%) | 1978 |
| 116Cs | 61 | 115,9334 | -62 040,0 | --- | 700,0 мс | (1+) | β⁺→116Xe(99,671%) β⁺p→115I(0,28%) β⁺α→112Te(0,049%) | 1975 |
| 116mCs | 61 | 115,9335 | -61 940,0 | --- | 3,85 с | (7+) | β⁺→116Xe(99,557%) β⁺p→115I(0,44%) β⁺α→112Te(0,003%) | 1975 |
| 117Cs | 62 | 116,9286 | -66 490,0 | --- | 8,4 с | (9/2+) | β⁺→117Xe(100%) | 1972 |
| 117mCs | 62 | 116,9288 | -66 340,0 | --- | 6,5 с | (3/2+) | β⁺→117Xe(100%) | 1978 |
| 118Cs | 63 | 117,9266 | -68 409,0 | --- | 14,0 с | 2+ | β⁺→118Xe(99,978%) β⁺p→117I(0,021%) β⁺α→114Te(0,001%) | 1969 |
| 118mCs | 63 | 117,9267 | -68 310,0 | --- | 17,0 с | (7-) | β⁺→118Xe(99,978%) β⁺p→117I(0,021%) β⁺α→114Te(0,001%) | 1972 |
| 119Cs | 64 | 118,9224 | -72 305,0 | --- | 43,0 с | 9/2+ | β⁺→119Xe(~100%) β⁺α→115Te(<2е-6%) | 1969 |
| 119mCs | 64 | 118,9224 | -72 260,0 | --- | 30,4 с | 3/2+ | β⁺→119Xe(100%) | 1978 |
| 120Cs | 65 | 119,9207 | -73 889,0 | --- | 1,01 хв | 2+ | β⁺→120Xe(~100%) β⁺α→116Te(<2е-5%) β⁺p→119I(<7е-6%) | 1969 |
| 120mCs | 65 | 119,9208 | -73 790,0 | --- | 57,0 с | (7-) | β⁺→120Xe(~100%) β⁺α→116Te(<2е-5%) β⁺p→119I(<7е-6%) | 1977 |
| 121Cs | 66 | 120,9172 | -77 102,0 | --- | 2,58 хв | 3/2+ | β⁺→121Xe(100%) | 1969 |
| 121mCs | 66 | 120,9173 | -77 034,0 | --- | 2,03 хв | 9/2+ | β⁺→121Xe(83%) γ→121Cs(17%) | 1981 |
| 122Cs | 67 | 121,9161 | -78 140,0 | --- | 21,18 с | 1+ | β⁺→122Xe(~100%) β⁺α→118Te(<2е-7%) | 1969 |
| 122mCs | 67 | 121,9162 | -78 090,0 | --- | --- | 3+ | γ→122Cs(100%) | 1987 |
| 122nCs | 67 | 121,9163 | -78 005,0 | --- | 3,7 хв | 8- | β⁺→122Xe(100%) | 1969 |
| 123Cs | 68 | 122,913 | -81 044,0 | --- | 5,88 хв | 1/2+ | β⁺→123Xe(100%) | 1954 |
| 123mCs | 68 | 122,9132 | -80 888,0 | --- | 1,64 с | 11/2- | γ→123Cs(100%) | 1972 |
| 123nCs | 68 | 122,9133 | -80 792,0 | --- | 114,0 нс | (9/2+) | γ→123Cs(100%) | 2000 |
| 124Cs | 69 | 123,9122 | -81 741,0 | --- | 30,9 с | 1+ | β⁺→124Xe(100%) | 1969 |
| 124mCs | 69 | 123,9127 | -81 278,0 | --- | 6,41 с | (7+) | γ→124Cs(99,89%) β⁺→124Xe(0,11%) | 1983 |
| 125Cs | 70 | 124,9097 | -84 090,0 | --- | 44,35 хв | 1/2+ | β⁺→125Xe(100%) | 1954 |
| 125mCs | 70 | 124,91 | -83 824,0 | --- | 900,0 мкс | (11/2-) | γ→125Cs(100%) | 1998 |
| 126Cs | 71 | 125,9094 | -84 351,0 | --- | 1,64 хв | 1+ | β⁺→126Xe(100%) | 1954 |
| 126mCs | 71 | 125,9097 | -84 078,0 | --- | --- | (4-) | γ→126Cs(100%) | 1993 |
| 126nCs | 71 | 125,9101 | -83 755,0 | --- | 171,0 мкс | (8-) | γ→126Cs(100%) | 1993 |
| 127Cs | 72 | 126,9074 | -86 240,0 | --- | 6,25 год | 1/2+ | β⁺→127Xe(100%) | 1950 |
| 127mCs | 72 | 126,9079 | -85 788,0 | --- | 55,0 мкс | (11/2-) | γ→127Cs(100%) | 1980 |
| 128Cs | 73 | 127,9077 | -85 932,0 | --- | 3,64 хв | 1+ | β⁺→128Xe(100%) | 1951 |
| 129Cs | 74 | 128,9061 | -87 499,0 | --- | 1,34 д | 1/2+ | β⁺→129Xe(100%) | 1950 |
| 129mCs | 74 | 128,9067 | -86 924,0 | --- | 718,0 нс | (11/2-) | γ→129Cs(100%) | 1977 |
| 130Cs | 75 | 129,9067 | -86 900,0 | --- | 29,21 хв | 1+ | β⁺→130Xe(98,4%) β⁻→130Ba(1,6%) | 1952 |
| 130mCs | 75 | 129,9069 | -86 737,0 | --- | 3,46 хв | 5- | γ→130Cs(~100%) β⁺→130Xe(0,16%) | 1977 |
| 131Cs | 76 | 130,9055 | -88 055,57 | --- | 9,69 д | 5/2+ | EC→131Xe(100%) | 1947 |
| 132Cs | 77 | 131,9064 | -87 152,7 | --- | 6,48 д | 2+ | β⁺→132Xe(98,13%) β⁻→132Ba(1,87%) | 1953 |
| 134Cs | 79 | 133,9067 | -86 891,165 | --- | 2,07 р | 4+ | β⁻→134Ba(~100%) EC→134Xe(3е-4%) | 1940 |
| 134mCs | 79 | 133,9069 | -86 752,421 | --- | 2,91 год | 8- | γ→134Cs(100%) | 1975 |
| 135Cs | 80 | 134,906 | -87 582,0 | --- | 1,33 Мр | 7/2+ | β⁻→135Ba(100%) | 1949 |
| 135mCs | 80 | 134,9077 | -85 949,1 | --- | 53,0 хв | 19/2- | γ→135Cs(100%) | 1962 |
| 136Cs | 81 | 135,9073 | -86 338,9 | --- | 13,01 д | 5+ | β⁻→136Ba(100%) | 1951 |
| 136mCs | 81 | 135,9079 | -85 821,0 | --- | 17,5 с | 8- | γ→136Cs β⁻→136Ba | 1981 |
| 137Cs | 82 | 136,9071 | -86 545,8 | --- | 30,04 р | 7/2+ | β⁻→137Ba(100%) | 1951 |
| 138Cs | 83 | 137,911 | -82 887,0 | --- | 33,5 хв | 3- | β⁻→138Ba(100%) | 1943 |
| 138mCs | 83 | 137,9111 | -82 807,0 | --- | 2,91 хв | 6- | γ→138Cs(81%) β⁻→138Ba(19%) | 1971 |
| 139Cs | 84 | 138,9134 | -80 701,0 | --- | 9,27 хв | 7/2+ | β⁻→139Ba(100%) | 1939 |
| 140Cs | 85 | 139,9173 | -77 050,0 | --- | 1,06 хв | 1- | β⁻→140Ba(100%) | 1950 |
| 140mCs | 85 | 139,9173 | -77 036,0 | --- | 471,0 нс | (2-) | γ→140Cs(100%) | 1974 |
| 141Cs | 86 | 140,92 | -74 477,0 | --- | 24,84 с | 7/2+ | β⁻→141Ba(99,966%) β⁻n→140Ba(0,034%) | 1962 |
| 142Cs | 87 | 141,9243 | -70 515,0 | --- | 1,69 с | 0- | β⁻→142Ba(99,911%) β⁻n→141Ba(0,089%) | 1962 |
| 143Cs | 88 | 142,9273 | -67 676,0 | --- | 1,8 с | 3/2+ | β⁻→143Ba(98,38%) β⁻n→142Ba(1,62%) | 1962 |
| 144Cs | 89 | 143,9321 | -63 271,0 | --- | 994,0 мс | 1- | β⁻→144Ba(97,02%) β⁻n→143Ba(2,98%) | 1967 |
| 144mCs | 89 | 143,9322 | -63 179,0 | --- | 1,1 мкс | (4-) | γ→144Cs(100%) | 2009 |
| 144nCs | 89 | 144,0 | 0,0 | --- | --- | (?-) | β⁻→144Ba γ→144Cs β⁻n→143Ba | 1978 |
| 145Cs | 90 | 144,9355 | -60 054,0 | --- | 582,0 мс | 3/2+ | β⁻→145Ba(87,2%) β⁻n→144Ba(12,8%) | 1971 |
| 145mCs | 90 | 144,9363 | -59 291,0 | --- | 500,0 нс | (13/2) | γ→145Cs(100%) | 2015 |
| 146Cs | 91 | 145,9406 | -55 310,4 | --- | 321,6 мс | 1- | β⁻→146Ba(85,8%) β⁻n→145Ba(14,2%) β⁻n→144Ba | 1971 |
| 146mCs | 91 | 145,9407 | -55 263,7 | --- | 1,25 мкс | (4-) | γ→146Cs(100%) | 2015 |
| 147Cs | 92 | 146,9443 | -51 920,0 | --- | 230,5 мс | (3/2+) | β⁻→147Ba(71,5%) β⁻n→146Ba(28,5%) | 1978 |
| 147mCs | 92 | 146,945 | -51 219,0 | --- | 190,0 нс | (13/2) | γ→147Cs(100%) | 2015 |
| 148Cs | 93 | 147,9496 | -46 911,0 | --- | 151,8 мс | (2-) | β⁻→148Ba(71,3%) β⁻n→147Ba(28,7%) β⁻n→146Ba | 1978 |
| 148mCs | 93 | 147,9497 | -46 866,0 | --- | 4,8 мкс | (4-) | γ→148Cs(100%) | 2015 |
| 149Cs | 94 | 148,9535 | -43 300,0 | --- | 112,3 мс | (3/2+) | β⁻→149Ba(75%) β⁻n→148Ba(25%) β⁻n→147Ba | 1979 |
| 150Cs | 95 | 149,959 | -38 170,0 | --- | 81,0 мс | (2-) | β⁻→150Ba(56%) β⁻n→149Ba(44%) β⁻n→148Ba | 1979 |
| 151Cs | 96 | 150,9632 | -34 280,0 | --- | 59,0 мс | (3/2+) | β⁻→151Ba(100%) β⁻n→150Ba β⁻n→149Ba | 1979 |
| 152Cs | 97 | 151,9687 | -29 130,0 | --- | 17,0 мс | --- | β⁻→152Ba β⁻n→151Ba | 1987 |