Question

Assertion :Manganese has a less favourable electron affinity than its neighbours in either side. Reason: The magnitude of an elements electron affinity depends on the elements valence shell electronic configuration.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Assertion:
Manganese has a less favorable electron affinity than its neighbours in either side.
Reason:
The magnitude of an elements electron affinity depends on the elements valence shell electronic configuration.
The valence shell electron configuration of $Mn$ is $3d^{5}4s^2$. It has completely filled $4s$ subshell and half filled $3d$ subshell.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.