Input interpretation
Th-232 | half-life
Result
14 Gyr (gigayears) (-22 to 50 Gyr)
Decay properties
half-life | 14 Gyr (gigayears) (-18 to 40 Gyr) mean lifetime | 20.2 Gyr (gigayears) (-30 to 90 Gyr) decay constant | 1.57×10^-18 per second specific activity | 4.07 kBq/g (kilobecquerels per gram) width | 7.16×10^-34 eV (electronvolts) decay modes | α (alpha emission) | SF (spontaneous fission) | ^24Ne +^26Ne (double cluster emission) | 2β^- (double beta decay) final decay products | Pb-208 (100%) | Pb-206 (4×10^-9%) | Pb-204 (0%) | Hg-200 (0%) | Hg-204 (0%)
Unit conversions
14 billion years
4.42×10^17 seconds
Comparisons as half-life
≈ ( 0.022 ≈ 1/46 ) × half-life of platinum-190 ( 2.0499×10^19 s )
≈ 0.34 × half-life of rhenium-187 ( 1.299×10^18 s )
≈ 3.1 × half-life of uranium-238 ( ≈ 1.41×10^17 s )