(C) The assertion is true because $F$ is the most electronegative element in the periodic table.The reason is false because $F$ has a lower electron a

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If the Assertion is correct but Reason is incorrect.

(C) The assertion is true because $F$ is the most electronegative element in the periodic table.The reason is false because $F$ has a lower electron affinity than $Cl$.This is due to the small size of the $F$ atom,which leads to strong inter-electronic repulsions among the electrons in its $2p$ subshell,making it less favorable to add an extra electron compared to $Cl$.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Electronegativity

Medium

Assertion : $F$ is more electronegative than $Cl$.
Reason : $F$ has higher electron affinity than $Cl$.

AIIMS 2007 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.