Q13 / 75 · JEE Main 2020 (08 Jan Shift 2) · Chemistry

Arrange the following bonds according to their average bond energies in descending order:
C-Cl,C-Br,C-F,C-I

  • Correct answer
    A
    C-F>C-Cl>C-Br>C-I
  • B
    C-Br>C-I>C-Cl>C-F
  • C
    C-I>C-Br>C-Cl>C-F
  • D
    C-Cl>C-Br>C-I>C-F

Solution

Bond energy ∝1Bond  length

Bond length order in carbon halogen bonds arein the order of C – F < C – Cl < C – Br < C – IHence, Bond energy orderC – F > C – Cl > C – Br > C – I

Hence, the correct answer is option: 'A'.

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