The first 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

Answer

A

Explanation

Ionisation potential of nitrogen is more than that of oxygen. This is because introgen has more stable half - filled p-orbitals. `(N=1s^(2),2s^(2),2p^(3),O=1s^(2),2s^(2),2p^(4))`