Co-ordination number of transition metal atom in each of the following complexes has to be given. (a) [ C o ( N O 2 ) 3 ( N H 3 ) 3 ] (b) N a [ F e ( H 2 O ) 2 ( O H ) 4 ] (c) [ C o ( e n ) 2 C l 2 ] I (d) [ N i C O 4 ] 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.

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Chapter 22, Problem 22.41QP

Interpretation Introduction

Interpretation:

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

(a) [Co(NO2)3(NH3)3] (b) Na[Fe(H2O)2(OH)4]

(c) [Co(en)2Cl2]I (d) [NiCO4]

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.

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