uranium 238

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uranium 238

The most common isotope of uranium, having mass number 238 and half-life 4.46 × 10⁹ years, nonfissionable but irradiated with neutrons to produce fissionable plutonium 239.

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Noun

uranium 238 - the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239

atomic number 92, uranium, U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

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atomic number 92
decay chain

plutonium 239
U

uranium
weapon-grade plutonium

weapons plutonium

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