Input interpretation
Tc-99 | half-life
Result
0.2111 Myr (megayears) (-4 to 4 Myr)
Decay properties
half-life | 0.2111 Myr (megayears) (-4 to 4 Myr) mean lifetime | 0.3046 Myr (megayears) (-8 to 8 Myr) decay constant | 1.041×10^-13 per second specific activity | 634 MBq/g (megabecquerels per gram) width | 4.75×10^-29 eV (electronvolts) decay modes | β^- (electron emission) final decay products | Ru-99 (100%)
Unit conversions
211.1 kyr (kiloyears)
211100 years
6.657×10^12 seconds
Comparisons as half-life
≈ ( 0.013 ≈ 1/74 ) × half-life of iodine-129 ( ≈ 4.95×10^14 s )
≈ 2.8 × half-life of nickel-59 ( 2.3968×10^12 s )
≈ 37 × half-life of carbon-14 ( ≈ 1.8×10^11 s )