Cf
Каліфорній
Z 98 251,0 г/мольАктиноїд Радіоактивний
| 237Cf | 139 | 237,0622 | 57 940,0 | --- | 800,0 мс | (5/2+) | α→233Cm(70%) SF(30%) β⁺→237Bk | 1995 |
| 238Cf | 140 | 238,0615 | 57 280,0 | --- | 21,1 мс | 0+ | SF(97,5%) α→234Cm(2,5%) | 1995 |
| 239Cf | 141 | 239,0625 | 58 200,0 | --- | 28,0 с | (5/2+) | α→235Cm(65%) β⁺→239Bk | 1981 |
| 240Cf | 142 | 240,0623 | 57 989,0 | --- | 40,3 с | 0+ | α→236Cm(98,5%) SF(1,5%) β⁺→240Bk | 1970 |
| 241Cf | 143 | 241,0637 | 59 330,0 | --- | 2,35 хв | (7/2-) | α→237Cm(15%) β⁺→241Bk | 1970 |
| 242Cf | 144 | 242,0638 | 59 387,0 | --- | 3,49 хв | 0+ | α→238Cm(61%) β⁺→242Bk(39%) SF(<0,014%) | 1967 |
| 243Cf | 145 | 243,0655 | 60 990,0 | --- | 10,8 хв | (1/2+) | β⁺→243Bk(86%) α→239Cm(14%) | 1967 |
| 244Cf | 146 | 244,066 | 61 478,1 | --- | 19,5 хв | 0+ | α→240Cm(75%) EC→244Bk(25%) | 1956 |
| 245Cf | 147 | 245,068 | 63 385,2 | --- | 45,0 хв | 1/2+ | β⁺→245Bk(64,7%) α→241Cm(35,3%) | 1956 |
| 246Cf | 148 | 246,0688 | 64 090,2 | --- | 1,49 д | 0+ | α→242Cm(~100%) SF(2,4е-4%) EC→246Bk | 1951 |
| 247Cf | 149 | 247,071 | 66 109,0 | --- | 3,11 год | (7/2+) | EC→247Bk(99,965%) α→243Cm(0,035%) | 1954 |
| 248Cf | 150 | 248,0722 | 67 238,0 | --- | 333,5 д | 0+ | α→244Cm(~100%) SF(0,003%) | 1954 |
| 249Cf | 151 | 249,0749 | 69 722,7 | --- | 351,0 р | 9/2- | α→245Cm(~100%) SF(5е-7%) | 1954 |
| 249mCf | 151 | 249,075 | 69 867,7 | --- | 45,0 мкс | 5/2+ | γ→249Cf(100%) | 1967 |
| 250Cf | 152 | 250,0764 | 71 170,3 | --- | 13,08 р | 0+ | α→246Cm(99,923%) SF(0,077%) | 1954 |
| 251Cf | 153 | 251,0796 | 74 135,0 | --- | 898,0 р | 1/2+ | α→247Cm(100%) SF | 1954 |
| 251mCf | 153 | 251,08 | 74 505,0 | --- | 1,3 мкс | 11/2- | γ→251Cf(100%) | 1971 |
| 252Cf | 154 | 252,0816 | 76 034,6 | --- | 2,65 р | 0+ | α→248Cm(96,897%) SF(3,103%) | 1954 |
| 253Cf | 155 | 253,0851 | 79 302,0 | --- | 17,81 д | (7/2+) | β⁻→253Es(99,69%) α→249Cm(0,31%) | 1954 |
| 254Cf | 156 | 254,0873 | 81 341,0 | --- | 60,5 д | 0+ | SF(99,69%) α→250Cm(0,31%) β⁻ | 1955 |
| 255Cf | 157 | 255,091 | 84 810,0 | --- | 1,42 год | (7/2+) | β⁻→255Es(100%) SF α→251Cm | 1981 |
| 256Cf | 158 | 256,0934 | 87 040,0 | --- | 12,3 хв | 0+ | SF(100%) α→252Cm β⁻ | 1980 |