Input interpretation
Re-187 At-223 | half-life
Results
Re-187 | 41 Gyr (gigayears) (40.99 to 41.49 Gyr) At-223 | 50 seconds (39 to 65 s)
Units
Relative values
| visual | ratios | | comparisons At-223 | | 3.8×10^-17 | 1 | 99.9999999999999962% smaller Re-187 | | 1 | 26 quadrillion | 2.6×10^18% larger
Decay properties
| Re-187 | At-223 half-life | 41 Gyr (40.99 to 41.48 Gyr) | 50 s (39 to 64 s) mean lifetime | 59.6 Gyr (59.14 to 59.81 Gyr) | 72 s (61.6 to 82.9 s) decay constant | 5.32×10^-19 per second | 0.014 per second specific activity | 1.71 kBq/g | 3.8×10^7 TBq/g width | 3.51×10^-34 eV | 9.1×10^-18 eV decay modes | β^- (electron emission) | α (alpha emission) | β^- (electron emission) | α (alpha emission) final decay products | Os-187 (100%) | W-183 (1×10^-4%) | Hf-179 (0%) | Pb-207 (100%) | Tl-205 (9×10^-8%)