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Which is the formula for calculating the mass number of an atom? A protons + neutrons B quarks + protons C protons + electrons D neutrons + electrons
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Which is the formula for calculating the mass number of an atom?

A protons + neutrons


B quarks + protons


C protons + electrons


D neutrons + electrons

User Cau
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1 Answer

2 votes

Answer:

A: protons + neutrons

Step-by-step explanation:

protons and neutrons both have the same mass. Their mass is much greater than the mass of an electron so it is deemed negligible

User Kevin Muchwat
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