Chapter 4.5, Problem 4QQ

Interpretation Introduction

Interpretation:

The same thing that is present between the two ions that are isoelectronic has to be chosen among given options.

Concept Introduction:

Isoelectronic species:

Ions or atoms that have the same number of electrons are called isoelectronic species.  Example; Neon, ${\text{O}}^{\text{2-}}{\text{,F}}^{\text{-}}{\text{,Na}}^{\text{+}}{\text{,Mg}}^{\text{+}}{\text{.Al}}^{\text{3+}}$ all have same configuration i.e., ${\text{1s}}^{\text{2}}{\text{2s}}^{\text{2}}{\text{2p}}^{\text{6}}$ are isoelectronic.