Physics · Atomic Physics
The mass number of an atom's nucleus is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The sum of the numbers of neutrons and protons✓
- 2The total mass of neutrons and protons
- 3Always more than its atomic weight
- 4Always less than its atomic number
Correct answer
The sum of the numbers of neutrons and protons
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