Input interpretation
Fm-259 Md-257 | half-life
Results
Fm-259 | 1.5 seconds (1.17 to 1.83 s) Md-257 | 5.53 hours (5.4688 to 5.5728 h)
Units
Relative values
| visual | ratios | | comparisons Fm-259 | | 7.5×10^-5 | 1 | 99.9925% smaller Md-257 | | 1 | 13000 | 1.3×10^6% larger
Decay properties
| Fm-259 | Md-257 half-life | 1.5 s (1.18 to 1.82 s) | 5.53 h (5.4689 to 5.5728 h) mean lifetime | 2.2 s (1.71 to 2.62 s) | 7.97 h (7.85 to 8.0394 h) decay constant | 0.45 per second | 3.48×10^-5 per second specific activity | 1.1×10^9 TBq/g | 81600 TBq/g width | 3×10^-16 eV | 2.3×10^-20 eV decay modes | SF (spontaneous fission) | ϵ (electron capture) | α (alpha emission) | SF (spontaneous fission) final decay products | | Tl-205 (100%) | Pb-207 (7×10^-12)