Er
Ербій
Z 68 167,259 г/мольЛантаноїд
| 166Er | 98 | 165,9303 | -64 924,1 | 33,503% | Стабільний | 0+ | --- | 1934 |
| 168Er | 100 | 167,9324 | -62 989,23 | 26,978% | Стабільний | 0+ | --- | 1934 |
| 167Er | 99 | 166,9321 | -63 289,26 | 22,869% | Стабільний | 7/2+ | --- | 1934 |
| 170Er | 102 | 169,9355 | -60 107,5 | 14,91% | Стабільний | 0+ | β⁻ α→166Dy | 1934 |
| 164Er | 96 | 163,9292 | -65 942,6 | 1,601% | Стабільний | 0+ | α→160Dy β⁺ | 1938 |
| 162Er | 94 | 161,9288 | -66 334,2 | 0,139% | Стабільний | 0+ | α→158Dy β⁺ | 1938 |
| 142Er | 74 | 141,97 | -27 930,0 | --- | 10,0 мкс | 0+ | p→141Ho | --- |
| 143Er | 75 | 142,9665 | -31 160,0 | --- | 200,0 мс | (9/2-) | β⁺→143Ho β⁺p→142Dy | 2005 |
| 144Er | 76 | 143,9607 | -36 610,0 | --- | 400,0 мс | 0+ | β⁺→144Ho | 2003 |
| 145Er | 77 | 144,9579 | -39 240,0 | --- | 900,0 мс | (1/2+) | β⁺→145Ho(100%) β⁺p→144Dy | 1989 |
| 145mEr | 77 | 144,9581 | -39 040,0 | --- | 1,0 с | (11/2-) | β⁺→145Ho(100%) γ→145Er β⁺p→144Dy | 2010 |
| 146Er | 78 | 145,9524 | -44 322,0 | --- | 1,7 с | 0+ | β⁺→146Ho(100%) β⁺p→145Dy | 1993 |
| 147Er | 79 | 146,95 | -46 610,0 | --- | 3,2 с | (1/2+) | β⁺→147Ho(100%) β⁺p→146Dy | 1992 |
| 147mEr | 79 | 146,9501 | -46 510,0 | --- | 1,6 с | (11/2-) | β⁺→147Ho(100%) β⁺p→146Dy | 1982 |
| 148Er | 80 | 147,9447 | -51 479,0 | --- | 4,6 с | 0+ | β⁺→148Ho(99,85%) β⁺p→147Dy(0,15%) | 1982 |
| 148mEr | 80 | 147,9479 | -48 566,0 | --- | 13,0 мкс | (10+) | γ→148Er(100%) | 1982 |
| 149Er | 81 | 148,9423 | -53 742,0 | --- | 4,0 с | (1/2+) | β⁺→149Ho(93%) β⁺p→148Dy(7%) | 1984 |
| 149mEr | 81 | 148,9431 | -53 000,0 | --- | 8,9 с | (11/2-) | β⁺→149Ho(96,32%) γ→149Er(3,5%) β⁺p→148Dy(0,18%) | 1984 |
| 149nEr | 81 | 148,9451 | -51 131,0 | --- | 610,0 нс | (19/2+) | γ→149Er(100%) | 1987 |
| 150Er | 82 | 149,9379 | -57 831,0 | --- | 18,5 с | 0+ | β⁺→150Ho(100%) | 1982 |
| 150mEr | 82 | 149,9409 | -55 035,0 | --- | 2,55 мкс | 10+ | γ→150Er(100%) | 1984 |
| 151Er | 83 | 150,9374 | -58 266,0 | --- | 23,5 с | (7/2-) | β⁺→151Ho(100%) | 1970 |
| 151mEr | 83 | 150,9402 | -55 680,0 | --- | 580,0 мс | (27/2-) | γ→151Er(95,3%) β⁺→151Ho(4,7%) | 1980 |
| 151nEr | 83 | 150,9485 | -47 979,0 | --- | 420,0 нс | (65/2+) | γ→151Er(100%) | 1990 |
| 152Er | 84 | 151,9351 | -60 500,0 | --- | 10,3 с | 0+ | α→148Dy(90%) β⁺→152Ho(10%) | 1963 |
| 153Er | 85 | 152,9351 | -60 467,0 | --- | 37,1 с | 7/2- | α→149Dy(53%) β⁺→153Ho(47%) | 1963 |
| 153mEr | 85 | 152,9381 | -57 669,0 | --- | 373,0 нс | (27/2-) | γ→153Er(100%) | 1979 |
| 153nEr | 85 | 152,9407 | -55 219,0 | --- | 248,0 нс | (41/2-) | γ→153Er(100%) | 1979 |
| 154Er | 86 | 153,9328 | -62 605,0 | --- | 3,73 хв | 0+ | β⁺→154Ho(~100%) α→150Dy(0,47%) | 1963 |
| 155Er | 87 | 154,9332 | -62 209,0 | --- | 5,3 хв | 7/2- | β⁺→155Ho(99,978%) α→151Dy(0,022%) | 1969 |
| 156Er | 88 | 155,9311 | -64 212,0 | --- | 19,5 хв | 0+ | β⁺→156Ho(~100%) α→152Dy(1,2е-5%) | 1967 |
| 157Er | 89 | 156,9319 | -63 414,0 | --- | 18,65 хв | 3/2- | β⁺→157Ho(100%) | 1966 |
| 157mEr | 89 | 156,9321 | -63 259,0 | --- | 76,0 мс | 9/2+ | γ→157Er(100%) | 1971 |
| 158Er | 90 | 157,9299 | -65 304,0 | --- | 2,29 год | 0+ | EC→158Ho(100%) | 1961 |
| 159Er | 91 | 158,9307 | -64 561,0 | --- | 36,0 хв | 3/2- | β⁺→159Ho(100%) | 1962 |
| 159mEr | 91 | 158,9309 | -64 378,0 | --- | 337,0 нс | 9/2+ | γ→159Er(100%) | 1971 |
| 159nEr | 91 | 158,9312 | -64 132,0 | --- | 590,0 нс | 11/2- | γ→159Er(100%) | 1971 |
| 160Er | 92 | 159,9291 | -66 064,0 | --- | 1,19 д | 0+ | EC→160Ho(100%) | 1954 |
| 161Er | 93 | 160,93 | -65 201,0 | --- | 3,21 год | 3/2- | β⁺→161Ho(100%) | 1954 |
| 161mEr | 93 | 160,9304 | -64 805,0 | --- | 7,5 мкс | 11/2- | γ→161Er(100%) | 1969 |
| 162mEr | 94 | 161,931 | -64 308,2 | --- | 88,0 нс | (7-) | γ→162Er(100%) | 1974 |
| 163Er | 95 | 162,93 | -65 167,0 | --- | 1,25 год | 5/2- | β⁺→163Ho(100%) | 1953 |
| 163mEr | 95 | 162,9305 | -64 722,0 | --- | 580,0 нс | (11/2-) | γ→163Er(100%) | 1974 |
| 165Er | 97 | 164,9307 | -64 521,4 | --- | 10,36 год | 5/2- | EC→165Ho(100%) | 1950 |
| 165mEr | 97 | 164,9313 | -63 970,1 | --- | 250,0 нс | 11/2- | γ→165Er(100%) | 1970 |
| 165nEr | 97 | 164,9327 | -62 698,4 | --- | 370,0 нс | (19/2) | γ→165Er(100%) | 2012 |
| 167mEr | 99 | 166,9323 | -63 081,46 | --- | 2,27 с | 1/2- | γ→167Er(100%) | 1986 |
| 168mEr | 100 | 167,9336 | -61 895,19 | --- | 109,0 нс | 4- | γ→168Er(100%) | 1974 |
| 169Er | 101 | 168,9346 | -60 921,2 | --- | 9,39 д | 1/2- | β⁻→169Tm(100%) | 1956 |
| 169mEr | 101 | 168,9347 | -60 829,2 | --- | 285,0 нс | (5/2-) | γ→169Er(100%) | 1969 |
| 169nEr | 101 | 168,9349 | -60 677,5 | --- | 200,0 нс | 7/2+ | γ→169Er(100%) | 1969 |
| 171Er | 103 | 170,938 | -57 717,8 | --- | 7,52 год | 5/2- | β⁻→171Tm(100%) | 1938 |
| 171mEr | 103 | 170,9383 | -57 519,2 | --- | 210,0 нс | 1/2- | γ→171Er(100%) | 1969 |
| 172Er | 104 | 171,9394 | -56 483,0 | --- | 2,05 д | 0+ | β⁻→172Tm(100%) | 1956 |
| 172mEr | 104 | 171,941 | -54 982,0 | --- | 579,0 нс | (6+) | γ→172Er(100%) | 2006 |
| 173Er | 105 | 172,9424 | -53 650,0 | --- | 1,43 хв | (7/2-) | β⁻→173Tm(100%) | 1972 |
| 174Er | 106 | 173,9442 | -51 950,0 | --- | 3,2 хв | 0+ | β⁻→174Tm(100%) | 1989 |
| 174mEr | 106 | 173,9454 | -50 840,0 | --- | 3,9 с | 8- | γ→174Er(100%) | 2006 |
| 175Er | 107 | 174,9478 | -48 650,0 | --- | 1,2 хв | (9/2+) | β⁻→175Tm(100%) | 1996 |
| 176Er | 108 | 175,9499 | -46 630,0 | --- | 12,0 с | 0+ | β⁻→176Tm | 2012 |
| 177Er | 109 | 176,954 | -42 860,0 | --- | 8,0 с | (1/2-) | β⁻→177Tm | 2012 |
| 178Er | 110 | 177,9568 | -40 260,0 | --- | 4,0 с | 0+ | β⁻→178Tm | 2012 |
| 179Er | 111 | 178,9613 | -36 080,0 | --- | 3,0 с | (3/2-) | β⁻→179Tm β⁻n→178Tm | 2018 |
| 180Er | 112 | 179,9644 | -33 180,0 | --- | 2,0 с | 0+ | β⁻→180Tm β⁻n→179Tm | 2018 |