Which elements does not exhibit natural radioactivity

Which of the following elements does not exhibit natural radioactivity

  1. Uranium
  2. Thorium
  3. Aluminium
  4. Polonium
Anurag Mishra Professor Asked on 19th December 2015 in Chemistry.
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1 Answer(s)

Answer: (3) Aluminium 

Anurag Mishra Professor Answered on 19th December 2015.
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