This tiny, 5mg sample of uranium gives off more than enough radiation to be picked up by a Geiger counter. It is natural uranium, meaning that is 0.6% fissile U-235, and the rest is non-fissile U-238.
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U - Uranium This tiny, 5mg sample of uranium gives off more than enough radiation to be picked up by a Geiger counter. It is natural uranium, meaning that is 0.6% fissile U-235, and the rest is non-fissile U-238. | |||||||||||||||||