Input interpretation
At-219 No-252 | decay constant
Results
At-219 | 0.012 per second No-252 | 0.284 per second
Relative values
| visual | ratios | | comparisons At-219 | | 0.043 | 1 | 95.7% smaller No-252 | | 1 | 23 | 2200% larger
Decay properties
| At-219 | No-252 half-life | 56 s (52.5 to 59.5 s) | 2.44 s (2.2 to 2.483 s) mean lifetime | 81 s (75.8 to 85.8 s) | 3.52 s (3.46 to 3.58 s) decay constant | 0.012 per second | 0.284 per second specific activity | 3.4×10^7 TBq/g | 6.79×10^8 TBq/g width | 8.1×10^-18 eV | 1.87×10^-16 eV decay modes | α (alpha emission) | β^- (electron emission) | α (alpha emission) | SF (spontaneous fission) | β^+ (positron emission) final decay products | Pb-207 (100%) | Pb-208 (70%) | Pb-206 (3×10^-9%) | Hg-204 (3×10^-12%) | Pb-204 (0%) | Hg-200 (0%)