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

$\bf{\underline{\underline{Answer:}}}$

(c) B < C < N < O

Increasing first ionization enthalpy