Chapter 22, Problem 22.42QP

Interpretation Introduction

Interpretation:

Co-ordination number of transition metal atom in each of the following complexes has to be given.

(a) $\left[Co{\left(N{O}_2\right)}_3{\left(N{H}_3\right)}_3\right]$ (b)  $Na\left[Fe{\left(H_{2}O\right)}_2{\left(OH\right)}_4\right]$

(c)  $\left[Co{\left(en\right)}_{2}C{l}_2\right]I$        (d)  $\left[NiC{O}_4\right]$

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 establish 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 complex compound refers to the number of ligands bonded to central metal atom.