Q. Which of the following elements has the lowest atomic mass?

  • (A) Helium
  • (B) Hydrogen
  • (C) Lithium
  • (D) Beryllium
✅ Correct Answer: (B) Hydrogen
Explanation: Hydrogen has the lowest atomic mass of all elements, with an atomic mass of approximately 1.

Published by Sikhar Chaudhary ⭐ 6.79K Points at 06-Oct-2025 06:48 am in Chemistry

Explanation by: Sikhar Chaudhary
Hydrogen has the lowest atomic mass of all elements, with an atomic mass of approximately 1.

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