Manganese 52 – 5.591 days
Gold 196 – 6.183 days
Boron 8 – 770 milliseconds
Nitrogen 12 – 11 milliseconds
Cobalt 57 – 271.79 days
Caesium 137 – 30.17 years
Uranium 232 – 68.9 years
Plutonium 238 – 87.7 years
Uranium 238 4,5 billion years and it gives 14 radioactive steps to natural decay to lead. According to half lives one who purchases some grams of uranium can experience two reactions to protactinium as an end product. This has the assumption that the initiation of reactions are at the time pont of acquiring uranium from the shop. Of course there would be all fourteen elements in the ore because of previous decays all the way back of its life as an ore. Uranium is created only by supernova explosions and has fallen on earth.
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