Asked by Ironmarshy14

How is the mass number of an atom calculated? (1 point) Responses total number of electrons total number of electrons electrons plus neutrons electrons plus neutrons protons plus neutrons protons plus neutrons total number of protons
Answered by GPT-4o mini
The mass number of an atom is calculated as the total number of protons plus neutrons. Therefore, the correct response is:

**protons plus neutrons**.
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