Discuss the nature of bonding in metal carbonyls.

Draw all the isomers (geometrical and optical) of:
\([Co(NH_{3})_{2}Cl_{2}(en)]^{+}\)

Using IUPAC norms write the systematic names of the following:
\([Ni(NH_{3})_{6}]Cl_{2}\)

Draw all the isomers (geometrical and optical) of:
\([Co(NH_{3})Cl(en)_{2}]^{2+}\)

Using IUPAC norms write the systematic names of the following:
\([Co(en)_{3}]^{3+}\)

Using IUPAC norms write the formulas for the following:
Potassium tetracyanidonickelate(II)

Explain the bonding in coordination compounds in terms of Werner’s postulates.

What is meant by the chelate effect? Give an example.

\([Fe(CN)_{6}]^{4-}\) and \([Fe(H_{2}O)_{6}]^{2+}\) are of different colours in dilute solutions. Why?

Using IUPAC norms write the systematic names of the following:
\([Co(NH_{3})_{6}]Cl_{3}\)

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex:
\(K_{4}[Mn(CN)_{6}]\)

Using IUPAC norms write the systematic names of the following:
\([Pt(NH_{3})_{2}Cl(NH_{2}CH_{3})]Cl\)

Explain with two examples each of the following: coordination entity, ligand, coordination number, coordination polyhedron, homoleptic and heteroleptic.

Explain the violet colour of the complex \([Ti(H_{2}O)_{6}]^{3+}\) on the basis of crystal field theory.

Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:
\([Co(C_{2}O_{4})_{3}]^{3-}\)

A solution of \([Ni(H_{2}O)_{6}]^{2+}\) is green but a solution of \([Ni(CN)_{4}]^{2-}\) is colourless. Explain.

Using IUPAC norms write the formulas for the following:
Pentaamminenitrito-O-cobalt(III)

\(FeSO_{4}\) solution mixed with \((NH_{4})_{2}SO_{4}\) solution in 1:1 molar ratio gives the test of \(Fe^{2+}\) ion but \(CuSO_{4}\) solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of \(Cu^{2+}\) ion. Explain why?

Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:
\([FeF_{6}]^{3-}\)

\([Cr(NH_{3})_{6}]^{3+}\) is paramagnetic while \([Ni(CN)_{4}]^{2-}\) is diamagnetic. Explain why?