If an atom of sodium has 11 protons, what is its approximate atomic mass?

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asked Oct 3, 2018 135k views

1 Answer

Fody · Answer 1 · 2018-10-07T02:21:28+0000

If you add the amount of protons with the amount of neutrons, you get the atomic mass. Sodium has 11 protons, and 12 neutrons. 11+12=23