Chemistryhard · Past Paper
What is the mass number of an atom of Oxygen-18?
A8
B16
C18
D10
✓ Correct Answer: C — 18
In isotope notation (like Oxygen-18), the number indicates the mass number.
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✓ Correct Answer: C — 18
In isotope notation (like Oxygen-18), the number indicates the mass number.
Share this question