イッテルビウムの同位体
一覧

| 同位体核種 | Z(p)> 励起エネルギー | N(n)> 励起エネルギー | 同位体質量 (u)> 励起エネルギー | 半減期 | 核スピン数 | 天然存在比 | 天然存在比 (範囲) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 148Yb | 70 | 78 | 147.96742(64)# | 250# ms | 0+ |  |  |
| 149Yb | 70 | 79 | 148.96404(54)# | 0.7(2) s | (1/2+,3/2+) |  |  |
| 150Yb | 70 | 80 | 149.95842(43)# | 700# ms [>200 ns] | 0+ |  |  |
| 151Yb | 70 | 81 | 150.95540(32) | 1.6(5) s | (1/2+) |  |  |
| 151m1Yb | 750(100)# keV | 750(100)# keV | 750(100)# keV | 1.6(5) s | (11/2-) |  |  |
| 151m2Yb | 1790(500)# keV | 1790(500)# keV | 1790(500)# keV | 2.6(7) µs | 19/2-# |  |  |
| 151m3Yb | 2450(500)# keV | 2450(500)# keV | 2450(500)# keV | 20(1) µs | 27/2-# |  |  |
| 152Yb | 70 | 82 | 151.95029(22) | 3.04(6) s | 0+ |  |  |
| 153Yb | 70 | 83 | 152.94948(21)# | 4.2(2) s | 7/2-# |  |  |
| 153mYb | 2700(100) keV | 2700(100) keV | 2700(100) keV | 15(1) µs | (27/2-) |  |  |
| 154Yb | 70 | 84 | 153.946394(19) | 0.409(2) s | 0+ |  |  |
| 155Yb | 70 | 85 | 154.945782(18) | 1.793(19) s | (7/2-) |  |  |
| 156Yb | 70 | 86 | 155.942818(12) | 26.1(7) s | 0+ |  |  |
| 157Yb | 70 | 87 | 156.942628(11) | 38.6(10) s | 7/2- |  |  |
| 158Yb | 70 | 88 | 157.939866(9) | 1.49(13) min | 0+ |  |  |
| 159Yb | 70 | 89 | 158.94005(2) | 1.67(9) min | 5/2(-) |  |  |
| 160Yb | 70 | 90 | 159.937552(18) | 4.8(2) min | 0+ |  |  |
| 161Yb | 70 | 91 | 160.937902(17) | 4.2(2) min | 3/2- |  |  |
| 162Yb | 70 | 92 | 161.935768(17) | 18.87(19) min | 0+ |  |  |
| 163Yb | 70 | 93 | 162.936334(17) | 11.05(25) min | 3/2- |  |  |
| 164Yb | 70 | 94 | 163.934489(17) | 75.8(17) min | 0+ |  |  |
| 165Yb | 70 | 95 | 164.93528(3) | 9.9(3) min | 5/2- |  |  |
| 166Yb | 70 | 96 | 165.933882(9) | 56.7(1) h | 0+ |  |  |
| 167Yb | 70 | 97 | 166.934950(5) | 17.5(2) min | 5/2- |  |  |
| 168Yb | 70 | 98 | 167.933897(5) | STABLE [>130E+12 a] | 0+ | 0.0013(1) |  |
| 169Yb | 70 | 99 | 168.935190(5) | 32.026(5) d | 7/2+ |  |  |
| 169mYb | 24.199(3) keV | 24.199(3) keV | 24.199(3) keV | 46(2) s | 1/2- |  |  |
| 170Yb | 70 | 100 | 169.9347618(26) | STABLE | 0+ | 0.0304(15) |  |
| 170mYb | 1258.46(14) keV | 1258.46(14) keV | 1258.46(14) keV | 370(15) ns | 4- |  |  |
| 171Yb | 70 | 101 | 170.9363258(26) | STABLE | 1/2- | 0.1428(57) |  |
| 171m1Yb | 95.282(2) keV | 95.282(2) keV | 95.282(2) keV | 5.25(24) ms | 7/2+ |  |  |
| 171m2Yb | 122.416(2) keV | 122.416(2) keV | 122.416(2) keV | 265(20) ns | 5/2- |  |  |
| 172Yb | 70 | 102 | 171.9363815(26) | STABLE | 0+ | 0.2183(67) |  |
| 173Yb | 70 | 103 | 172.9382108(26) | STABLE | 5/2- | 0.1613(27) |  |
| 173mYb | 398.9(5) keV | 398.9(5) keV | 398.9(5) keV | 2.9(1) µs | 1/2- |  |  |
| 174Yb | 70 | 104 | 173.9388621(26) | STABLE | 0+ | 0.3183(92) |  |
| 175Yb | 70 | 105 | 174.9412765(26) | 4.185(1) d | 7/2- |  |  |
| 175mYb | 514.865(4) keV | 514.865(4) keV | 514.865(4) keV | 68.2(3) ms | 1/2- |  |  |
| 176Yb | 70 | 106 | 175.9425717(28) | STABLE [>160E+15 a] | 0+ | 0.1276(41) |  |
| 176mYb | 1050.0(3) keV | 1050.0(3) keV | 1050.0(3) keV | 11.4(3) s | (8)- |  |  |
| 177Yb | 70 | 107 | 176.9452608(28) | 1.911(3) h | (9/2+) |  |  |
| 177mYb | 331.5(3) keV | 331.5(3) keV | 331.5(3) keV | 6.41(2) s | (1/2-) |  |  |
| 178Yb | 70 | 108 | 177.946647(11) | 74(3) min | 0+ |  |  |
| 179Yb | 70 | 109 | 178.95017(32)# | 8.0(4) min | (1/2-) |  |  |
| 180Yb | 70 | 110 | 179.95233(43)# | 2.4(5) min | 0+ |  |  |
| 181Yb | 70 | 111 | 180.95615(43)# | 1# min | 3/2-# |  |  |