Question

In which of the following arrangements, the order is NOT according to the property indicated against it?
(a) Li < Na < K < Rb : Increasing metallic radius
(b) I < Br < F < Cl : Increasing electron gain enthalpy (with negative sign)
(c) B < C < N < O Increasing first ionization enthalpy
(d) Al³⁺ < Mg²⁺ < Na⁺ < F Increasing ionic size

Answer 1

Answer:

option c

Explanation:

Its because the nitrogen has greater first ionization enthalpy then and of oxygen due to it has half filled electrons in 2p orbital so the energy required to remove an electron from nitrogen is greater than that of oxygen