Chemistry · Atomic Structure
What happens when an oxygen atom becomes an oxygen ion (O2-)? (a) Its atomic mass decreases. (b) Its nucleon number increases. (c) Its atomic number remains the same. (d) Its mass number increases.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1only (c)✓
- 2only (d)
- 3(b) and (d)
- 4(a) and (c)
Correct answer
only (c)
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