A) \[Be\] and B
B) \[Na\] and \[Mg\]
C) \[Mg\]and \[Al\]
D) \[N\] and \[0\]
Correct Answer: B
Solution :
First ionisation energy of \[Mg\] is more than that of \[Na\]. It is not an exception.You need to login to perform this action.
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