The first ionisation potential in electron volts of nitrogen and oxygen atoms are, respectively, given by :
A
14.6, 13.6
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B
13.6, 14.6
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C
13.6, 13.6
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D
14.6, 14.6
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Solution
The correct option is B 14.6, 13.6 Ionisation potential of nitrogen is more that of oxygen. This is because nitrogen has more stable fully half-filled p orbitals.