Plutonium-244
Isotope
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Plutonium-244 is an isotope of plutonium that has a half-life of 80 million years. This is longer than any of the other isotopes of plutonium and longer than any other actinide isotope except for the three naturally abundant ones: uranium-235,... Wikipedia
Protons: 94
Mass number: 244.0642044 Da
Half-life (t1/2): 8×107 years
Natural abundance: Trace
Parent isotopes: 248Cm (α); 244Np (β−)