Chapter 22, Problem 22.13QP

Interpretation Introduction

Interpretation:

The bonding between oxalate ion and $F{e}^{3+}$ metal ion has to be illustrated using electron dot formula.

Concept introduction:

Complex compounds are primarily formed by transition elements which are d-block elements.  A co-ordination compound is known as a complex compound is made of metal atom/ion and ligand(s).  Ligands are considered as Lewis bases and the central metal atom is Lewis acid.  Ligands donate a pair of electron to metal ion and establishes bonding with metal ion which is known as co-ordinate bond and hence, these compounds are named as co-ordination compounds.  The ligands represented inside the square brackets.

Co-ordination number of a central metal atom in its complex compound refers to the number of ligands bonded to central metal atom.