The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by
A.
$$14.6,13.6\,$$
B.
$$13.6,14.6$$
C.
$$13.6,13.6$$
D.
$$14.6,14.6$$
Answer :
$$14.6,13.6\,$$
Solution :
Ionisation potential of nitrogen is more than that of oxygen. This is because nitrogen has more stable half-filled $$p$$-orbitals. $$\left( {N - 1{s^2},2{s^2},2{p^3},O = 1{s^2},2{s^2},2{p^4}} \right)$$
Releted MCQ Question on Inorganic Chemistry >> Classification of Elements and Periodicity in Properties
Releted Question 1
The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is