PLEASE HELP!!! What is the atomic mass number equal to? ? # electrons ? # protons + # electrons ? # protons ? # protons - # electrons

asked Jan 1, 2018 106k views

3 votes

PLEASE HELP!!!

What is the atomic mass number equal to?
? # electrons
? # protons + # electrons
? # protons
? # protons - # electrons

by Octav

7.4k points

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7 votes

atomic no = no of electrons present in atom
and atomic mass = no of protons + no of neutrons

Sheldonhull answered Jan 5, 2018

8.1k points

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