Periodic TableHard

Question

The fist ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by

Options

A.14.6,13.6
B.13.6, 14.6
C.13.6, 13.6
D.14.6, 14.6

Solution

Due to half-filled P-subshell, N-has hgher I. E1 than O, and only option (a) matches with this fact.

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