Q51 / 180 · AIIMS 2007 · Chemistry

Assertion : \(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\). Reason : \(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • Correct answer
    C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Solution

Chlorine has high electron affinity than fluorine. The less negative electron gain enthalpy of fluorine as compared to chlorine is due to very small size of the fluorine atom.

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

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