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  9. Q2

BPSC (Bihar PCS) 2018 · Question 2 of 149

Which of the following elements does not contain neutrons?

Miscellaneous

  1. AOxygen
  2. BNitrogen
  3. CHydrogenCorrect
  4. DCopper
  5. ENone of the above/More than one of the above

Answer: C. Hydrogen

Explanation

Hydrogen (protium, 1H) has one proton and no neutrons.

Source: Vision IAS

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