Pr
Празеодим
Z 59 140,908 г/мольЛантаноїд
| 141Pr | 82 | 140,9077 | -86 014,5 | 100,0% | Стабільний | 5/2+ | --- | 1924 |
| 121Pr | 62 | 120,9554 | -41 550,0 | --- | 12,0 мс | (3/2+) | p→120Ce(100%) | 2005 |
| 122Pr | 63 | 121,9519 | -44 780,0 | --- | 500,0 мс | --- | β⁺→122Ce β⁺p→121La | --- |
| 123Pr | 64 | 122,9461 | -50 230,0 | --- | 800,0 мс | (3/2+) | β⁺→123Ce β⁺p→122La | --- |
| 124Pr | 65 | 123,9429 | -53 150,0 | --- | 1,2 с | --- | β⁺→124Ce(100%) β⁺p→123La | 1986 |
| 125Pr | 66 | 124,9377 | -58 070,0 | --- | 3,3 с | (3/2+) | β⁺→125Ce(100%) β⁺p→124La | 2002 |
| 126Pr | 67 | 125,9352 | -60 320,0 | --- | 3,12 с | (4) | β⁺→126Ce(100%) β⁺p→125La | 1983 |
| 127Pr | 68 | 126,9307 | -64 540,0 | --- | 4,2 с | (3/2+) | β⁺→127Ce(100%) | 1995 |
| 127mPr | 68 | 126,9314 | -63 940,0 | --- | 2,0 мкс | (11/2-) | γ→127Pr | 1998 |
| 128Pr | 69 | 127,9288 | -66 331,0 | --- | 2,85 с | (3+) | β⁺→128Ce(100%) β⁺p→127La | 1985 |
| 129Pr | 70 | 128,9251 | -69 774,0 | --- | 30,0 с | (3/2+) | β⁺→129Ce(100%) | 1977 |
| 129mPr | 70 | 128,9255 | -69 390,0 | --- | 26,0 мкс | (11/2-) | γ→129Pr(100%) | 1997 |
| 130Pr | 71 | 129,9236 | -71 180,0 | --- | 40,0 с | (6+) | β⁺→130Ce(100%) | 1977 |
| 130mPr | 71 | 129,9237 | -71 080,0 | --- | 10,0 с | (2+) | β⁺→130Ce | 1988 |
| 131Pr | 72 | 130,9202 | -74 300,0 | --- | 1,5 хв | (3/2+) | β⁺→131Ce(100%) | 1977 |
| 131mPr | 72 | 130,9204 | -74 150,0 | --- | 5,73 с | (11/2-) | γ→131Pr(96,4%) β⁺→131Ce(3,6%) | 1996 |
| 132Pr | 73 | 131,9192 | -75 227,0 | --- | 1,49 хв | (2+) | β⁺→132Ce(100%) | 1974 |
| 132mPr | 73 | 131,9193 | -75 200,0 | --- | 1,0 с | (5+) | β⁺→132Ce γ→132Pr | 1990 |
| 132nPr | 73 | 131,9195 | -74 980,0 | --- | 2,46 мкс | (8+) | γ→132Pr(100%) | 2012 |
| 133Pr | 74 | 132,9163 | -77 938,0 | --- | 6,5 хв | 5/2+ | β⁺→133Ce(100%) | 1970 |
| 133mPr | 74 | 132,9165 | -77 746,0 | --- | 1,1 с | (11/2-) | γ→133Pr(100%) | 1995 |
| 134Pr | 75 | 133,9157 | -78 528,0 | --- | 17,0 хв | 2- | β⁺→134Ce(100%) | 1967 |
| 134mPr | 75 | 133,9158 | -78 460,0 | --- | --- | 6- | β⁺→134Ce(100%) | 1973 |
| 135Pr | 76 | 134,9131 | -80 936,0 | --- | 24,0 хв | 3/2+ | β⁺→135Ce(100%) | 1954 |
| 135mPr | 76 | 134,9135 | -80 578,0 | --- | 105,0 мкс | (11/2-) | γ→135Pr(100%) | 1973 |
| 136Pr | 77 | 135,9127 | -81 340,0 | --- | 13,1 хв | 2+ | β⁺→136Ce(100%) | 1968 |
| 137Pr | 78 | 136,9107 | -83 202,0 | --- | 1,28 год | 5/2+ | β⁺→137Ce(100%) | 1958 |
| 137mPr | 78 | 136,9113 | -82 641,0 | --- | 2,66 мкс | 11/2- | γ→137Pr(100%) | 1987 |
| 138Pr | 79 | 137,9108 | -83 129,0 | --- | 1,45 хв | 1+ | β⁺→138Ce(100%) | 1951 |
| 138mPr | 79 | 137,9111 | -82 779,0 | --- | 2,12 год | 7- | β⁺→138Ce(100%) | 1958 |
| 139Pr | 80 | 138,9089 | -84 829,0 | --- | 4,41 год | 5/2+ | β⁺→139Ce(100%) | 1951 |
| 140Pr | 81 | 139,9091 | -84 686,0 | --- | 3,39 хв | 1+ | β⁺→140Ce(100%) EC→140Ce(51,3%) β⁺(48,7%) | 1938 |
| 140mPr | 81 | 139,9092 | -84 558,0 | --- | 350,0 нс | 5+ | γ→140Pr(100%) | 1964 |
| 140nPr | 81 | 139,9099 | -83 922,0 | --- | 3,05 мкс | (7-) | γ→140Pr(100%) | 1964 |
| 142Pr | 83 | 141,9101 | -83 786,4 | --- | 19,12 год | 2- | β⁻→142Nd(~100%) EC→142Ce(0,016%) | 1935 |
| 142mPr | 83 | 141,9101 | -83 782,7 | --- | 14,6 хв | 5- | γ→142Pr(100%) | 1967 |
| 143Pr | 84 | 142,9108 | -83 068,2 | --- | 13,57 д | 7/2+ | β⁻→143Nd(100%) | 1948 |
| 144Pr | 85 | 143,9133 | -80 750,6 | --- | 17,28 хв | 0- | β⁻→144Nd(100%) | 1951 |
| 144mPr | 85 | 143,9134 | -80 691,6 | --- | 7,2 хв | 3- | γ→144Pr(~100%) β⁻→144Nd(0,07%) | 1970 |
| 145Pr | 86 | 144,9145 | -79 626,0 | --- | 5,98 год | 7/2+ | β⁻→145Nd(100%) | 1954 |
| 146Pr | 87 | 145,9177 | -76 670,0 | --- | 24,09 хв | (2-) | β⁻→146Nd(100%) | 1953 |
| 147Pr | 88 | 146,919 | -75 444,0 | --- | 13,39 хв | 3/2+ | β⁻→147Nd(100%) | 1964 |
| 148Pr | 89 | 147,9221 | -72 535,0 | --- | 2,29 хв | 1- | β⁻→148Nd(100%) | 1964 |
| 148mPr | 89 | 147,9222 | -72 458,0 | --- | 2,01 хв | (4) | β⁻→148Nd(64%) γ→148Pr(36%) | 1964 |
| 149Pr | 90 | 148,9237 | -71 039,0 | --- | 2,26 хв | (5/2+) | β⁻→149Nd(100%) | 1964 |
| 150Pr | 91 | 149,9267 | -68 301,0 | --- | 6,19 с | 1- | β⁻→150Nd(100%) | 1970 |
| 151Pr | 92 | 150,9283 | -66 780,0 | --- | 18,9 с | (3/2-) | β⁻→151Nd(100%) | 1990 |
| 151mPr | 92 | 150,9283 | -66 745,0 | --- | 50,0 мкс | (7/2+) | γ→151Pr(100%) | 2006 |
| 152Pr | 93 | 151,9316 | -63 758,0 | --- | 3,57 с | 4+ | β⁻→152Nd(100%) | 1983 |
| 152mPr | 93 | 151,9317 | -63 643,0 | --- | 4,16 мкс | (1+) | γ→152Pr(100%) | 1990 |
| 153Pr | 94 | 152,9339 | -61 568,0 | --- | 4,28 с | (3/2-) | β⁻→153Nd(100%) β⁻n→152Nd | 1987 |
| 154Pr | 95 | 153,9379 | -57 860,0 | --- | 2,3 с | (3+) | β⁻→154Nd(100%) β⁻n→153Nd | 1988 |
| 155Pr | 96 | 154,9405 | -55 415,0 | --- | 1,47 с | (3/2-) | β⁻→155Nd(100%) β⁻n→154Nd | 1992 |
| 156Pr | 97 | 155,9448 | -51 449,3 | --- | 444,0 мс | (1+) | β⁻→156Nd(100%) β⁻n→155Nd | 1992 |
| 157Pr | 98 | 156,948 | -48 435,0 | --- | 307,0 мс | (3/2-) | β⁻→157Nd(100%) β⁻n→156Nd | 2017 |
| 158Pr | 99 | 157,9526 | -44 150,0 | --- | 181,0 мс | (5-) | β⁻→158Nd(100%) β⁻n→157Nd | 2016 |
| 159Pr | 100 | 158,9562 | -40 770,0 | --- | 134,0 мс | (3/2-) | β⁻→159Nd(100%) β⁻n→158Nd | 2017 |
| 160Pr | 101 | 159,9611 | -36 200,0 | --- | 170,0 мс | (1+) | β⁻→160Nd(100%) β⁻n→159Nd | 2017 |
| 161Pr | 102 | 160,9651 | -32 490,0 | --- | 90,0 мс | (3/2-) | β⁻→161Nd β⁻n→160Nd | 2018 |