Ba
Барій
Z 56 137,327 г/мольЛужноземельний метал
| 138Ba | 82 | 137,9052 | -88 261,81 | 71,7% | Стабільний | 0+ | --- | 1925 |
| 137Ba | 81 | 136,9058 | -87 721,4 | 11,23% | Стабільний | 3/2+ | --- | 1932 |
| 136Ba | 80 | 135,9046 | -88 887,08 | 7,85% | Стабільний | 0+ | --- | 1932 |
| 135Ba | 79 | 134,9057 | -87 850,65 | 6,59% | Стабільний | 3/2+ | --- | 1932 |
| 134Ba | 78 | 133,9045 | -88 950,0 | 2,42% | Стабільний | 0+ | --- | 1936 |
| 130Ba | 74 | 129,9063 | -87 256,78 | 0,11% | Стабільний | 0+ | β⁺ | 1936 |
| 132Ba | 76 | 131,9051 | -88 434,9 | 0,1% | Стабільний | 0+ | β⁺ | 1936 |
| 113Ba | 57 | 112,9574 | -39 710,0 | --- | 30,0 мс | (5/2+) | p→112Cs α→109Xe | --- |
| 114Ba | 58 | 113,9507 | -45 910,0 | --- | 460,0 мс | 0+ | β⁺→114Cs(80%) β⁺p→113Xe(20%) α→110Xe(0,9%) CD→102Sn(<0,003%) | 1995 |
| 115Ba | 59 | 114,9475 | -48 920,0 | --- | 450,0 мс | (5/2+) | β⁺→115Cs(100%) β⁺p→114Xe(>15%) | 1997 |
| 116Ba | 60 | 115,9416 | -54 380,0 | --- | 1,3 с | 0+ | β⁺→116Cs(97%) β⁺p→115Xe(3%) | 1997 |
| 117Ba | 61 | 116,9383 | -57 460,0 | --- | 1,75 с | (3/2+) | β⁺→117Cs(86,976%) β⁺p→116Xe(13%) β⁺α→113I(0,024%) | 1977 |
| 118Ba | 62 | 117,9332 | -62 200,0 | --- | 5,2 с | 0+ | β⁺→118Cs(100%) | 1997 |
| 119Ba | 63 | 118,9307 | -64 590,0 | --- | 5,4 с | (5/2+) | β⁺→119Cs(75%) β⁺p→118Xe(25%) | 1974 |
| 120Ba | 64 | 119,926 | -68 890,0 | --- | 24,0 с | 0+ | β⁺→120Cs(100%) | 1974 |
| 121Ba | 65 | 120,9241 | -70 740,0 | --- | 29,7 с | 5/2+ | β⁺→121Cs(99,98%) β⁺p→120Xe(0,02%) | 1975 |
| 122Ba | 66 | 121,9199 | -74 609,0 | --- | 1,95 хв | 0+ | β⁺→122Cs(100%) | 1974 |
| 123Ba | 67 | 122,9188 | -75 655,0 | --- | 2,7 хв | 5/2+ | β⁺→123Cs(100%) | 1962 |
| 123mBa | 67 | 122,9189 | -75 534,0 | --- | 830,0 нс | (1/2+) | γ→123Ba(100%) | 1991 |
| 124Ba | 68 | 123,9151 | -79 090,0 | --- | 11,0 хв | 0+ | β⁺→124Cs(100%) | 1967 |
| 125Ba | 69 | 124,9145 | -79 669,0 | --- | 3,3 хв | 1/2+ | β⁺→125Cs(100%) | 1968 |
| 125mBa | 69 | 124,9146 | -79 549,0 | --- | 2,76 мкс | (7/2-) | γ→125Ba(100%) | 1989 |
| 126Ba | 70 | 125,9113 | -82 670,0 | --- | 1,67 год | 0+ | β⁺→126Cs(100%) | 1954 |
| 127Ba | 71 | 126,9111 | -82 818,0 | --- | 12,7 хв | 1/2+ | β⁺→127Cs(100%) | 1952 |
| 127mBa | 71 | 126,9112 | -82 738,0 | --- | 1,93 с | 7/2- | γ→127Ba(100%) | 1992 |
| 128Ba | 72 | 127,9084 | -85 369,2 | --- | 2,43 д | 0+ | EC→128Cs(100%) | 1950 |
| 129Ba | 73 | 128,9087 | -85 061,0 | --- | 2,23 год | 1/2+ | β⁺→129Cs(100%) | 1950 |
| 129mBa | 73 | 128,9087 | -85 053,0 | --- | 2,13 год | 7/2+ | β⁺→129Cs(100%) γ→129Ba | 1950 |
| 130mBa | 74 | 129,909 | -84 781,7 | --- | 9,54 мс | 8- | γ→130Ba(100%) | 1969 |
| 131Ba | 75 | 130,9069 | -86 679,0 | --- | 11,52 д | 1/2+ | β⁺→131Cs(100%) | 1947 |
| 131mBa | 75 | 130,9071 | -86 491,0 | --- | 14,26 хв | 9/2- | γ→131Ba(100%) | 1963 |
| 133Ba | 77 | 132,906 | -87 553,5 | --- | 10,54 р | 1/2+ | EC→133Cs(100%) | 1941 |
| 133mBa | 77 | 132,9063 | -87 265,2 | --- | 1,62 д | 11/2- | γ→133Ba(99,99%) EC→133Cs(0,01%) | 1941 |
| 134mBa | 78 | 133,9077 | -85 992,8 | --- | 2,61 мкс | 10+ | γ→134Ba(100%) | 1982 |
| 135mBa | 79 | 134,906 | -87 582,43 | --- | 1,17 д | 11/2- | γ→135Ba(100%) | 1948 |
| 135nBa | 79 | 134,9083 | -85 462,7 | --- | 1,06 мс | (23/2+) | γ→135Ba(100%) | 2018 |
| 136mBa | 80 | 135,9068 | -86 856,55 | --- | 308,4 мс | 7- | γ→136Ba(100%) | 1965 |
| 136nBa | 80 | 135,9082 | -85 529,9 | --- | 91,0 нс | 10+ | γ→136Ba(100%) | 2004 |
| 137mBa | 81 | 136,9065 | -87 059,74 | --- | 2,55 хв | 11/2- | γ→137Ba(100%) | 1965 |
| 137nBa | 81 | 136,9083 | -85 372,3 | --- | 589,0 нс | (19/2-) | γ→137Ba(100%) | 1973 |
| 138mBa | 82 | 137,9075 | -86 171,27 | --- | 850,0 нс | 6+ | γ→138Ba(100%) | 1971 |
| 139Ba | 83 | 138,9088 | -84 913,92 | --- | 1,38 год | 7/2- | β⁻→139La(100%) | 1937 |
| 140Ba | 84 | 139,9106 | -83 268,0 | --- | 12,75 д | 0+ | β⁻→140La(100%) | 1939 |
| 141Ba | 85 | 140,9144 | -79 732,0 | --- | 18,27 хв | 3/2- | β⁻→141La(100%) | 1945 |
| 142Ba | 86 | 141,9164 | -77 842,0 | --- | 10,6 хв | 0+ | β⁻→142La(100%) | 1959 |
| 143Ba | 87 | 142,9206 | -73 937,0 | --- | 14,5 с | 5/2- | β⁻→143La(100%) | 1962 |
| 144Ba | 88 | 143,923 | -71 767,0 | --- | 11,73 с | 0+ | β⁻→144La(100%) | 1967 |
| 145Ba | 89 | 144,9275 | -67 516,0 | --- | 4,31 с | 5/2- | β⁻→145La(100%) | 1974 |
| 146Ba | 90 | 145,9304 | -64 866,3 | --- | 2,15 с | 0+ | β⁻→146La(100%) | 1970 |
| 147Ba | 91 | 146,9353 | -60 264,0 | --- | 893,0 мс | 5/2- | β⁻→147La(99,93%) β⁻n→146La(0,07%) | 1978 |
| 148Ba | 92 | 147,9382 | -57 544,9 | --- | 620,0 мс | 0+ | β⁻→148La(99,6%) β⁻n→147La(0,4%) | 1979 |
| 149Ba | 93 | 148,9433 | -52 830,6 | --- | 349,0 мс | (3/2-) | β⁻→149La(96,1%) β⁻n→148La(3,9%) | 1993 |
| 150Ba | 94 | 149,9464 | -49 890,0 | --- | 258,0 мс | 0+ | β⁻→150La(99%) β⁻n→149La(1%) | 1994 |
| 151Ba | 95 | 150,9518 | -44 940,0 | --- | 167,0 мс | (3/2-) | β⁻→151La(100%) β⁻n→150La | 1994 |
| 152Ba | 96 | 151,9553 | -41 610,0 | --- | 139,0 мс | 0+ | β⁻→152La(100%) β⁻n→151La | 2010 |
| 153Ba | 97 | 152,9608 | -36 470,0 | --- | 113,0 мс | (5/2-) | β⁻→153La(100%) β⁻n→152La β⁻n→151La | 2016 |
| 154Ba | 98 | 153,9647 | -32 920,0 | --- | 53,0 мс | 0+ | β⁻→154La(100%) | 2017 |