239 213
Pu-239 has a half-life of 24,110 years.
The half life of plutonium-239 is 2,41.10e+4 years.
239 years ago.
Slightly over 50 grams; the half-life of Pu-239 is around 24110 years, so in 24000 years a little less than half will have decayed to U-235.
no
Pu-239 has a half-life of 24,110 years.
Plutonium has 20 isotopes; each isotope has another half-life. Please read: http://en.wikipedia.org/wiki/Isotopes_of_plutonium.
1, 239 (239 is a prime number).
30% of 239= 30% * 239= 0.3 * 239= 71.7
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Joseph Stalin