Question

Which order is incorrect? 

(a) Al³⁺ < Mg²⁺ < Na < F (increasing atomic size)

(b) B < C < NO (increasing electron gain enthalpy)

(c) I < Br < Cl < F (increasing electron gain enthalpy)

(d) Li < Na < K < Rb (increasing metallic radius)

Answer 1

Correct option is : (b) B < C < NO (increasing electron gain enthalpy)