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The atomic mass of an element is equal to the number of: protons protons plus neutrons protons plus electrons neutrons
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1 vote
The atomic mass of an element is equal to the number of:

protons

protons plus neutrons

protons plus electrons

neutrons

User Ankush Verma
by
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2 Answers

4 votes

B is the correct answer

User Alexey Bakulin
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7.5k points
2 votes
Atomic mass is protons and neutrons, because they both have a mass of 1 amu. Electrons have so little mass that they can be ignored. The answer is therefore B, protons plus neutrons
User Giorgos Sfikas
by
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