Input interpretation
At-211 | half-life
Result
7.2139 hours (7.2057 to 7.2223 h)
Decay properties
half-life | 7.2139 hours (7.2059 to 7.2222 h) mean lifetime | 10.408 hours (10.397 to 10.419 h) decay constant | 2.6688×10^-5 per second specific activity | 76175 TBq/g (terabecquerels per gram) width | 1.757×10^-20 eV (electronvolts) decay modes | ϵ (electron capture) | α (alpha emission) final decay products | Pb-207 (100%)
Unit conversions
7 hours 12 minutes 50 seconds
25970 seconds
432.83 minutes
0.30058 days
Comparison as half-life
≈ 87 × half-life of uranium-241 ( ≈ 300 s )