Q. Mass number is the sum of

  • (A) Electrons and Protons
  • (B) Protons and Neutrons
  • (C) Electrons and Neutrons
  • (D) Only Protons
✅ Correct Answer: (B) Protons and Neutrons

Published by Shivam ⭐ 8.86K Points at 24-Jan-2021 03:06 am in Science

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