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The halflife is 2.1 days. Multiply that by about 5 to get the time to decay to near zero.

10.5 days or so.

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12y ago

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Where does the plutonium come from?

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Where does the element plutonium come from?

Uranium 238 is bombarded by neutrons, and forms Neptunium 238. Neptunium decays to form Plutonium 238.


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The half life of neptunium-238 is 2,117 days.


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What is the half-life of neptunium-238?

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How is neptunium used and why is it important?

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What is the purpose of neptunium?

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What is neptunium in that humans use?

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What could neptunium be used for?

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