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NEET2016Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Consider the reaction, H ₂+X₂ 2 H X , where X is halogen. The reactivity of halogens decrease in the order of

Options

  1. ACl ₂ F ₂ Br ₂ I ₂
  2. BI ₂ Br ₂ F ₂ Cl ₂
  3. CF ₂ Cl ₂ Br ₂ I ₂
  4. DI ₂ Br ₂ Cl ₂ F ₂

Correct answer

C. F ₂ Cl ₂ Br ₂ I ₂

Step-by-step solution

H - H + X - X 2 HX , where X= halogen. The correct decreasing order of reactivity of halogen molecule towards H ₂ is F ₂ Cl ₂ Br ₂ I ₂ .

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