(C) The Assertion is correct because electron affinity is the energy released when an electron is added to an isolated gaseous atom,whereas electroneg

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If the Assertion is correct but Reason is incorrect.

(C) The Assertion is correct because electron affinity is the energy released when an electron is added to an isolated gaseous atom,whereas electronegativity is the tendency of a bonded atom to attract shared electrons.The Reason is incorrect because electron affinity is an experimentally measurable quantity (in $kJ \ mol^{-1}$),whereas electronegativity is a relative scale (like the $Pauling$ scale) and is not directly measurable.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Electronegativity

Difficult

Assertion : Electron affinity refers to an isolated atom's attraction for an additional electron while electronegativity is the ability of an atom of an element to attract electrons towards itself in a shared pair of electrons.
Reason : Electron affinity is a relative number and electronegativity is experimentally measurable.

AIIMS 2010 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.