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MHT CET20226 Aug 2022Morning ShiftChemistryChemical Bonding and Molecular StructureActual

Identify the correct decreasing order of bond dissociation enthalpy from following.

Options

  1. AF - F > Cl - Cl > Br - Br > I - I
  2. BCl - Cl > F - F > Br - Br > I - I
  3. CI - I > Br - Br > Cl - Cl > F - F
  4. DCl - Cl > Br - Br > F - F > I - I

Correct answer

D. Cl - Cl > Br - Br > F - F > I - I

Step-by-step solution

:F - F: has small size and greater lone pair-lone pair repulsion therefore less B.S.

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