Assertion: The first ionisation energy of `Be` is greater than that of `B`.
Reason: 2p-orbital is lower in energy than 2s-orbital.

Options

A. Both Statement I and Statement II are correct, Statement II is the correct explanation of Statement I
B. Both Statement I and Statement II are correct, Statement II is not the correct explanation of Statement I
C. Statement I is correct, Statement II is the incorrect
D. Statement I is incorrect, Statement II is the correct

Answer

C

Explanation

Statement-1 is true.
Be ` 2s^(2) 2s^(2)` Fully filled valence subshell higher IE
B `1s^(2) 2s^(2) 2p^1`
Statement-II is false as the energy of 2s is lower than 2p.