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AP EAMCET2012ChemistryThermodynamics (C)

Bond energy of Cl ₂, Br ₂ and I ₂ follow the order

Options

  1. ACl ₂> Br ₂> I ₂
  2. BBr ₂> Cl ₂> I ₂
  3. CI ₂> Br ₂> Cl ₂
  4. DI ₂> Cl ₂> Br ₂

Correct answer

A. Cl ₂> Br ₂> I ₂

Step-by-step solution

As the size of atom increases, A-A bond length increases and hence, A-A bond energy decreases. (where A= Cl , Br , I ) The order of bond energy is Cl ₂> Br ₂> I ₂

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