Chemistry · Atomic Structure
Which statement correctly describes the relationship between the mass number (A) and atomic number (Z) of a nucleus?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A is always strictly less than Z
- 2A is always strictly equal to Z
- 3A is greater than Z for most nuclei, but equal to Z for ordinary hydrogen✓
- 4A is always strictly greater than Z for all elements
Correct answer
A is greater than Z for most nuclei, but equal to Z for ordinary hydrogen
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