Question
Question: Which of the following correctly defines isotopes?
A. Atoms of different elements with the same mass number B. Atoms of the same element with the same number of neutrons C. Atoms of the same element with different numbers of neutrons D. Atoms of the same element with different numbers of protons
Mark scheme (1 mark):
- C — Atoms of the same element with different numbers of neutrons (1)
Common error: picking D — different protons would make it a different element.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.