Input interpretation
At-219 | half-life
Result
56 seconds (52.4 to 59.6 s)
Decay properties
half-life | 56 seconds (52.5 to 59.5 s) mean lifetime | 81 seconds (75.8 to 85.8 s) decay constant | 0.012 per second specific activity | 3.4×10^7 TBq/g (terabecquerels per gram) width | 8.1×10^-18 eV (electronvolts) decay modes | α (alpha emission) | β^- (electron emission) final decay products | Pb-207 (100%)
Unit conversion
0.93 minutes
Comparison as half-life
≈ ( 0.19 ≈ 1/5 ) × half-life of uranium-241 ( ≈ 300 s )