Chapter 8.2, Problem 3RC

Interpretation Introduction

Interpretation: It should be identified for the species in the list which does not possess isoelectronic behavior among the given molecule.

Concept Introduction:

Isoelectronic:

The term” Isoelectronic ‘means equal electric, or more specially, equal charge .

Isoelectronic species are mostly having the same or equal number of electrons.

This model explores that although isoelectronic species have the same number of electrons but they differed in their position and physical and chemical property.

Examples of Isoelectronic species:

A series of isoelectronic ions can be made from any number of series of the elements.

For example, elements coming before Nobel gas form isoelectronic ions by gaining electrons until they have the same number of electrons as the Nobel gas.

The electron configuration of $\left[\text{Ar}\right]$ is

$\left[\text{Ar}\right]\text{ = }1s^2{\text{ 2s}}^2{\text{ 2p}}^6{\text{ 3s}}^2{\text{ 3s}}^6$

The series of isoelectronic species are ${\text{Sc}}^{\text{3+}}{\text{,Ca}}^{\text{2+}}{\text{,K}}^{\text{1+,}}{\text{Ar}}^{}{\text{,Cl}}^{\text{-1}}{\text{,S}}^{\text{2-}}{\text{,P}}^{\text{3-}}$.