Question

In which of the following options the order of arrangement
does not agree with the variation of property indicated
against it ? [2016]
(a) Al³⁺ < Mg²⁺ < Na⁺ < F⁻ (increasing ionic size)
(b) B < C < N < O (increasing first ionisation enthalpy)
(c) I < Br < Cl < F (increasing electron gain enthalpy)
(d) Li < Na < K < Rb (increasing metallic radius)

Answer 1

Answer:

I think b is the correct answer..............?