1215164 Plutonium-239 has a half-life of 24,100 years. Scott 1215162 Plutonium-244 has a half-life of 80 million years. Scott
1215164 Plutonium-239 has a half-life of 24,100 years. Scott 1215162 Plutonium-244 has a half-life of 80 million years. Scott