Input interpretation
W-178 Au-199 | half-life
Results
W-178 | 21.6 days (21.1 to 21.93 days) Au-199 | 75.33 hours (75.09 to 75.5068 h)
Units
Relative values
| visual | ratios | | comparisons Au-199 | | 0.145 | 1 | 85.5% smaller W-178 | | 1 | 6.9 | 590% larger
Decay properties
| W-178 | Au-199 half-life | 21.6 days (21.1 to 21.92 days) | 75.33 h (75.1 to 75.5066 h) mean lifetime | 31.1 days (30.7 to 31.63 days) | 108.7 h (108.441 to 108.934 h) decay constant | 3.72×10^-7 per second | 2.556×10^-6 per second specific activity | 1260 TBq/g | 7735 TBq/g width | 2.44×10^-22 eV | 1.682×10^-21 eV decay modes | ϵ (electron capture) | β^- (electron emission) final decay products | Hf-178 (100%) | Hg-199 (100%)