QAIPM-2002-Ch-2780: NEET 2002 Chemistry - Class 11 AIPM-2002-Ch-2780 Solution: Which of the following order is wrong?

Along the period, I.P. generally increases but not regularly. Be and B are exceptions. First I.P. increases in moving from left to right in a period, but I.P. of B is lower than Be. As in case of boron, 2p 1 electron have to be removed to get B + (1s 2 2s 2 ) from B(1s 2 2s 2 2p 1 ), while in case of Be (1s 2 2s 2 ) electron have to be removed to get Be + (1s 2 2s 1 ). p electron can be removed more easily than s electron so the energy required to remove electron will be less in case of boron.