Step 1: The coordination number is determined by counting the number of ligands directly attached to the central metal atom.
Step 2: In \([Co(NH_3)_4Cl_2]Cl\), cobalt is surrounded by four \( NH_3 \) ligands and two \( Cl^- \) ligands, making a total coordination number of 6.
(i) Draw the diagram which indicates the splitting of d-orbitals in tetrahedral field.
(ii) Write any one limitation of valence bond theory.
(i)[Ni(CN)₄]²⁻ and [Ni(CO)(_4)] have different structures, but do not differ in their magnetic behaviour. Explain.
(ii) Write the formula of Tetraamineaquachloridocobalt(III)chloride.
(i) Write two postulates of Werner's coordination theory.
(ii) Draw the geometrical isomers of [(NH_3)_3(NO_2)_3] and give their structures.