Rubidium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
71Rb | 70.96532 (54) |
| * |
| -32,300 (500) | 8,119 (7) | p ? |
|
72Rb | 71.95908 (54) |
| <1.5 | us | -38,120 (500) | 8,199 (7) | p ? |
|
73Rb | 72.95056 (16) |
| <30 | ns | -46,050 (150) | 8,306 (2) | p ? |
|
74Rb | 73.9442648 (39) |
| 64.76 | ms | -51,917.1 (3.7) | 8,381.73 (5) | B+ | 100 |
75Rb | 74.9385700 (80) |
| 19 | s | -57,221.7 (7.5) | 8,448.32 (9.9) | B+ | 100 |
76Rb | 75.9350722 (20) |
| 36.5 | s | -60,479.8 (1.9) | 8,486.23 (2.5) | B+ | 100 |
77Rb | 76.9304080 (80) |
| 3.77 | m | -64,824.5 (7.5) | 8,537.26 (9.7) | B+ | 100 |
78Rb | 77.9281410 (80) |
| 17.66 | m | -66,936.2 (7.5) | 8,558.36 (9.6) | B+ | 100 |
79Rb | 78.9239895 (64) |
| 22.9 | m | -70,803.4 (6) | 8,601.15 (7.6) | B+ | 100 |
80Rb | 79.9225193 (75) |
| 33.4 | s | -72,172.9 (7) | 8,611.64 (8.7) | B+ | 100 |
81Rb | 80.9189959 (64) |
| 4.576 | h | -75,454.8 (6) | 8,645.49 (7.4) | B+ | 100 |
82Rb | 81.9182086 (30) |
| 1.273 | m | -76,188.2 (2.8) | 8,647.43 (3.4) | B+ | 100 |
83Rb | 82.9151097 (64) |
| 86.2 | d | -79,074.8 (6) | 8,675.27 (7.2) | EC | 100 |
84Rb | 83.9143848 (30) |
| 32.77 | d | -79,750.0 (2.8) | 8,676.12 (3.3) | B+ | 96.2 5 |
85Rb | 84.911789737 (12) | 72.17 (2) | stable |
| -82,167.331 (11) | 8,697 (0) |
|
|
86Rb | 85.91116742 (21) |
| 18.642 | d | -82,747.02 (20) | 8,696.901 (2) | B-~100 |
|
87Rb | 86.909180526 (12) | 27.83 (2) | 49.23 | Gy | -84,597.795 (12) | 8,711 (0) |
|
|
88Rb | 87.91131559 (17) |
| 17.78 | m | -82,609.00 (16) | 8,681.115 (2) | B- | 100 |
89Rb | 88.9122780 (59) |
| 15.15 | m | -81,712.5 (5.5) | 8,664.19 (6.1) | B- | 100 |
90Rb | 89.9148017 (70) |
| 158 | s | -79,361.7 (6.5) | 8,631.48 (7.3) | B- | 100 |
91Rb | 90.9165370 (86) |
| 58.4 | s | -77,745.3 (8.1) | 8,607.56 (8.9) | B- | 100 |
92Rb | 91.9197289 (66) |
| 4.492 | s | -74,772.0 (6.1) | 8,569.42 (6.6) | B- | 100 |
93Rb | 92.9220419 (81) |
| 5.84 | s | -72,617.5 (7.6) | 8,540.90 (8.1) | B- | 100 |
94Rb | 93.9264049 (90) |
| 2.702 | s | -68,553.4 (8.4) | 8,492.66 (8.9) | B- | 100 |
95Rb | 94.929303 (23) |
| 377.5 | ms | -65,854 (21) | 8,459.8 (2.2) | B- | 100 |
96Rb | 95.934273 (32) |
| 203 | ms | -61,225 (29) | 8,407.5 (3.1) | B- | 100 |
97Rb | 96.937352 (33) |
| 169.9 | ms | -58,356 (31) | 8,374.5 (3.2) | B- | 100 |
98Rb | 97.941791 (54) |
| 114 | ms | -54,222 (50) | 8,329.2 (5.1) | B- | 100 |
99Rb | 98.94538 (13) |
| 50.3 | ms | -50,880 (130) | 8,293 (1.3) | B- | 100 |
100Rb | 99.94987 (32) |
| 51 | ms | -46,700 (300) | 8,249 (3) | B- | 100 |
101Rb | 100.95320 (18) |
| 32 | ms | -43,600 (170) | 8,216 (1.6) | B- | 100 |
102Rb | 101.95887 (54) |
| 37 | ms | -38,310 (500) | 8,163 (5) | B- | 100 |
71mRb | 70.96532 (54) |
| * |
| -32,300 (500) | 8,119 (7) | 0 |
|
72mRb | 71.95908 (54) |
| 1 | us | -38,120 (500) | 8,199 (7) | p ? |
|
73mRb | 72.95056 (16) |
|
|
| -46,050 (150) | 8,306 (2) | 0 |
|
76mRb | 75.9350722 (20) |
| 3.05 | us | -60,479.8 (1.9) | 8,486.23 (2.5) | IT | 100 |
78mRb | 77.9281410 (80) |
| 5.74 | m | -66,936.2 (7.5) | 8,558.36 (9.6) | B+ | 90 2 |
80mRb | 79.9225193 (75) |
| 1.6 | us | -72,172.9 (7) | 8,611.64 (8.7) | 0 |
|
81mRb | 80.9189959 (64) |
| 30.5 | m | -75,454.8 (6) | 8,645.49 (7.4) | IT | 97.6 6 |
82mRb | 81.9182086 (30) |
| 6.472 | h | -76,188.2 (2.8) | 8,647.43 (3.4) | B+~100 |
|
83mRb | 82.9151097 (64) |
| 7.8 | ms | -79,074.8 (6) | 8,675.27 (7.2) | IT | 100 |
84mRb | 83.9143848 (30) |
| 20.26 | m | -79,750.0 (2.8) | 8,676.12 (3.3) | IT~100 |
|
86mRb | 85.91116742 (21) |
| 1.017 | m | -82,747.02 (20) | 8,696.901 (2) | IT~100 |
|
90mRb | 89.9148017 (70) |
| 258 | s | -79,361.7 (6.5) | 8,631.48 (7.3) | B- | 97.4 4 |
93mRb | 92.9220419 (81) |
| 57 | us | -72,617.5 (7.6) | 8,540.90 (8.1) | IT | 100 |
96mRb | 95.934273 (32) |
| 200 | ms | -61,225 (29) | 8,407.5 (3.1) | B- ? |
|
98mRb | 97.941791 (54) |
| 96 | ms | -54,222 (50) | 8,329.2 (5.1) | B- | 100 |
71m1Rb | 70.96532 (54) |
|
|
| -32,300 (500) | 8,119 (7) | 0 |
|
78m1Rb | 77.9281410 (80) |
| R=2.0~0.5 |
| -66,936.2 (7.5) | 8,558.36 (9.6) | 0 |
|
90m1Rb | 89.9148017 (70) |
| 1 |
| -79,361.7 (6.5) | 8,631.48 (7.3) | 0 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005