Statement-1: The first ionization energy of Be is greater than that of B.
Statement-2: 2p orbital is lower in energy than 2s.

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Statement-1 is True, Statement-2 is True, Statement is NOT a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is False.

Statement-1 is False, Statement-2 is True.

Statement-1 is True, Statement-2 is True; Statement is a correct explanation for Statement-1.

answer is C.

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Detailed Solution

Because Be possesses a fully filled 2s orbital, which is a stable state, its first ionisation energy is higher than that of B.

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