Q. Which of the following is not a radio-active element

  • (A) Radium
  • (B) Thorium
  • (C) Cadmium
  • (D) Uranium
✅ Correct Answer: (C) Cadmium

Published by Ram Sharma ⭐ 193.88K Points at 09-Mar-2022 05:56 pm in Physics

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