Rf
Rutherfordium
Z 104 266.0 g/molTransition Metal Radioactive
| 253Rf | 149 | 253.1005 | 93,640.0 | --- | 13.0 ms | (7/2+) | SF(100%) α→249No | 1997 |
| 253mRf | 149 | 253.1007 | 93,840.0 | --- | 52.0 µs | (1/2+) | SF(100%) α→249No | 1995 |
| 254Rf | 150 | 254.1001 | 93,200.0 | --- | 22.9 µs | 0+ | SF(100%) α→250No(<1.5%) | 1997 |
| 254mRf | 150 | 254.1014 | 94,500.0 | --- | 4.3 µs | (8-) | γ→254Rf(100%) SF(<10%) | 2015 |
| 254nRf | 150 | 254.1022 | 95,200.0 | --- | 247.0 µs | (16+) | γ→254Rf(100%) SF(<40%) | 2015 |
| 255Rf | 151 | 255.1013 | 94,330.0 | --- | 1.63 s | (9/2-) | α→251No(52.8%) SF(47.2%) β⁺→255Lr(<6%) | 1975 |
| 255mRf | 151 | 255.1014 | 94,480.0 | --- | 43.0 µs | (5/2+) | γ→255Rf(100%) | 2015 |
| 255nRf | 151 | 255.1024 | 95,380.0 | --- | 16.0 µs | (19/2+) | γ→255Rf(100%) | 2020 |
| 256Rf | 152 | 256.1012 | 94,222.0 | --- | 6.6 ms | 0+ | SF(99.69%) α→252No(0.31%) | 1975 |
| 256mRf | 152 | 256.1024 | 95,340.0 | --- | 25.0 µs | (4-) | γ→256Rf(100%) SF | 2009 |
| 256nRf | 152 | 256.1027 | 95,620.0 | --- | 17.0 µs | (8-) | γ→256Rf(100%) SF | 2009 |
| 257Rf | 153 | 257.1029 | 95,866.0 | --- | 5.0 s | (1/2+) | α→253No(89.3%) β⁺→257Lr(9.4%) SF(1.3%) | 1969 |
| 257mRf | 153 | 257.103 | 95,940.0 | --- | 4.5 s | (11/2-) | α→253No(88.5%) β⁺→257Lr(11.5%) SF | 1997 |
| 257nRf | 153 | 257.1042 | 97,022.0 | --- | 106.0 µs | (21/2+) | γ→257Rf(100%) | 2009 |
| 258Rf | 154 | 258.1034 | 96,344.0 | --- | 12.5 ms | 0+ | SF(95.1%) α→254No(4.9%) | 1969 |
| 258mRf | 154 | 258.1047 | 97,540.0 | --- | 3.4 ms | --- | γ→258Rf α→254No β⁺→258Lr | 2016 |
| 258nRf | 154 | 258.105 | 97,840.0 | --- | 15.0 µs | --- | γ→258Rf SF | 2016 |
| 259Rf | 155 | 259.1056 | 98,370.0 | --- | 2.63 s | (3/2+) | α→255No(85%) β⁺→259Lr(15%) SF(<3%) | 1969 |
| 260Rf | 156 | 260.1064 | 99,150.0 | --- | 21.0 ms | 0+ | SF(100%) α→256No β⁺→260Lr | 1985 |
| 261Rf | 157 | 261.1088 | 101,320.0 | --- | 2.1 s | (3/2+) | SF(82%) α→257No(18%) | 1970 |
| 261mRf | 157 | 261.1088 | 101,390.0 | --- | 1.23 m | (11/2-) | α→257No(100%) β⁺→261Lr SF | 1970 |
| 262Rf | 158 | 262.1099 | 102,390.0 | --- | 250.0 ms | 0+ | SF(100%) | 1985 |
| 262mRf | 158 | 262.111 | 103,390.0 | --- | 47.0 ms | (8-) | SF(100%) | 1978 |
| 263Rf | 159 | 263.1125 | 104,760.0 | --- | 11.0 m | --- | SF(100%) α→259No | 2003 |
| 264Rf | 160 | 264.1139 | 106,080.0 | --- | 1.0 h | 0+ | α→260No | --- |
| 265Rf | 161 | 265.1167 | 108,690.0 | --- | 1.6 m | (9/2+) | SF(100%) α→261No | 2010 |
| 266Rf | 162 | 266.1182 | 110,140.0 | --- | 4.0 h | 0+ | α→262No SF | --- |
| 267Rf | 163 | 267.1218 | 113,440.0 | --- | 2.5 h | --- | SF(100%) | 2004 |
| 268Rf | 164 | 268.124 | 115,480.0 | --- | 1.0 h | 0+ | α→264No SF | --- |