Correct order of I ^ st IP among following elements Be, B, C, N, O is : -

NEET 2001 Chemistry question

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

(1)B < Be < C < O < NCorrect
(2)B < Be < C < N < O
(3)Be < B < C < N < O
(4)Be < B < C < O < N

Answer: (1)

Solution

Along period 2 the first ionisation energy generally increases with nuclear charge, with two exceptions: Be (filled ) is higher than B (the electron of B is easier to remove), and N

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Question ID VK-088818