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If the atomic number of an element is 8 and its mass number is 20, how many neutrons are in the atom's nucleus?

If the atomic number of an element is 8 and its mass number is 20, how many neutrons are in the atom's nucleus?
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If the atomic number of an element is 8 and its mass number is 20, how many neutrons are in the atom's nucleus?

User Stas Bichenko
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1 Answer

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There is 12 neutrons in the atoms nucleus.
User Michael Erickson
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