Assertion(A) : `IE_(2)` of `C` is greater than that of `B`.
Reason (R ): Due to penetration effect.

Options

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 (A) is incorrect and (R ) is correct

Answer

D

Explanation

Correct assertion: `IE_(2)` of `C lt IE_(2)` of `B`
Correct reason: `B(2s^(2), 2p^(1)) overset(-e^(-))rarr`
`B^(o+)(2s^(2))overset(-e^(ɵ))rarr B^(2+)(2s^(1))`
`C(2s^(2), 2p^(2)) overset(-e^(-))rarr C^(o+) (2s^(2) 2p^(1)) overset(-e^(-))rarr C^(2+)(2s^(2))`