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The atomic number of sodium is 11. How many protons will there be in a sodium ion?
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The atomic number of sodium is 11. How many protons will there be in a sodium ion?

User Doctor Eval
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11 is your answer
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present)
User Ramson Tutte
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