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Assertion (A): IE(1) of N is lower than ...

Assertion (A): `IE_(1)` of `N` is lower than `O`.
Reason (R ) : Across a period `Z_(eff)` decrease.

A

If both Assertion (A) and (R ) are correct and Reason (R ) is the correct explanation of Assertion (A).

B

If both (A) and (R ) are correct but (R ) is not the correct explanation for (A).

C

If (A) is correct but (R ) is not correct.

D

If both (A) and (R ) are correct

Text Solution

Verified by Experts

The correct Answer is:
C
Correct assertion: `IE_(1)` of `IE_(1)` of `O`, due to stable half-filled configuration of `N`.
Correct reason: `Z_(eff)` increases across a period.
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