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GK QUESTION#3321

Which of the following elements is NOT a halogen?

  1. AF
  2. BHeCorrect answer
  3. CCl
  4. DBr
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Answer

B. He

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Explanation

Helium belongs to Group 18, the noble gases. Fluorine, chlorine and bromine are Group 17 halogens. Bromine is a liquid at ordinary room temperature, so this question concerns halogen elements rather than calling every halogen a gas.

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