A) \[C>B>Be>Li\]
B) \[C>Be>B>Li\]
C) \[B>C>Be>Li\]
D) \[Be>Li>B>C\]
Correct Answer: B
Solution :
On moving from left to right in a period, as the size decreases, ionisation energy increases. But first IE of elements of\[II\]A group is higher than that of the elements of III A group because of the stable\[n{{s}^{2}}\]configuration (of\[II\]A group). Hence, the order of first ionisation energy is \[C>Be>B>Li\] Group no. (IV) (ii) (in) (i)
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