Correct order of first IP among following elements Be, B, C, N, O is

Options

(a) B (b) B (c) Be (d) Be

Correct Answer:

BExplanation:

Be – 1s²2s²; B – 1s²2s²2p¹; C – 1s²2s²2p²;N – 1s²2s²2p³;O – 1s²2s²2p⁴. IP increases along the period. But IP of Be > B. Further IP of O