Chemistry · Atomic Structure
How is the mass number of a specific atom calculated?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1By multiplying the atomic number by a generic baseline constant of 3
- 2By summing the total number of protons and electrons inside the atom
- 3By summing the total number of valence electrons and extra nucleons
- 4By summing the total number of protons and neutrons in the nucleus✓
Correct answer
By summing the total number of protons and neutrons in the nucleus
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