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How i the ma number of an atom calculated? (1 point) Repone electron plu neutron electron plu neutron total number of electron total number of electron total number of proton total number of proton proton
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How i the ma number of an atom calculated? (1 point)

Repone

electron plu neutron
electron plu neutron

total number of electron
total number of electron

total number of proton
total number of proton

proton plu neutron

User Scoregraphic
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4.9k points

1 Answer

6 votes
Proton plus neutron is the correct answer. Protons and neutrons have a mass of 1 and electrons have a mass of 0. So in order to find the mass of an atom you need to add the number of protons and the number of neutrons.
User Mark Spangler
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4.7k points
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