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Chemistry Easy PMS Uploaded: 04 Sep 2026

Isotopes of an element differ in the number of:

  • A Both protons and electrons
  • B Electrons
  • C Neutrons
  • D Protons
Correct Answer: Option C — Neutrons
Explanation:
Isotopes have the same number of protons and electrons but differ in the number of neutrons, resulting in different mass numbers while retaining identical chemical properties since electron configuration remains unchanged.
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Submitted by: PaperMCQs
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