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

Options

A. If both (A) and (R ) correct and (R ) is the correct explanation for (A)
B. If both (A) and (R ) correct and (R ) is the correct explanation for (A)
C. If (A) is correct but (R ) is incorrect
D. If (A) is incorrect but (R ) is correct

Answer

C

Explanation

Be has oionisation energy because Be (atomic number `4 = 1s^(2)2s^(2)` required higher energy to rfemove an electron from filled's orbital