Chapter 19, Problem 19.59QE

Interpretation Introduction

Interpretation:

Based on spectrochemical series, number of unpaired electrons in ${{\text{[FeCl}}_{\text{4}}{{\text{(H}}_{\text{2}}\text{O)}}_{\text{2}}\text{]}}^{\text{2}-}$ and ${{\text{[FeCl}}_{\text{4}}\text{]}}^{\text{2-}}$ complexes has to be given and all the possible isomers has to be named and drawn.

Concept Introduction:

Geometric isomers:

The compounds, which are having same molecular formula but different in three-dimensional arrangements of atoms or groups are known as geometric isomers.

Enantiomers:

The set of isomers, which relatively mirror images is known as enantiomers.

Spectrochemical series:

The arrangement of ligands in the order of its strengths is known as spectrochemical series, if ligand have more strength means is can be pair the $d$ electrons in metal orbitals.

If ligands have lesser strength means is cannot be pair the $d$ electrons in metal orbitals.