Periodic TableHard

Question

In which of the following arrangements the order is NOT according to the property indicated against it?

Options

A.Al³⁺ < Mg²⁺ < Na⁺ < F^-
Increasing ionic size

B.B < C < N < O
Increasing first ionization enthalpy

C.I < Br < F < Cl
Increasing electron gain enthalpy (with negative sign)

D.Li < Na < K < Rb
Increasing metallic radius

Solution

B < C < O < N

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