Write the name, the state of hybridization, the shape and the magnetic behaviour of the following complexes:
[Ni(CN)₄]^2-, [CoCl₄]^2-,[Cr(H₂O)₂(C₂O₄)₂]^- (At. No: Co = 27, Ni = 28, Cr = 24)

3

(a)

Give the formula of each of the following coordination entities:
(i) Co³⁺ ion is bound to one Cl^-, one NH₃ molecule (en) molecules.
(ii) Ni²⁺ ion is bound to two water molecules and two oxalate ions.
Write the name and magnetic behaviour of each of the above coordination entities.
(At. nos. Co = 27, Ni = 28)

3

(a)

Write the name, stereochemistry and magnetic behaviour of the following:
(At. nos. Mn = 25, Co = 27, Ni = 28)
(i) K₄(Mn(CN)₆]
(ii) [Co(NH₃)₅Cl]Cl₂
(iii) K₂[Ni(CN)₄]

3

(a)

(a) Square planar complexes (of MX₂L₂ type) with coordination number of 4 exhibits geometrical isomerism whereas tetrahedral complexes with similar composition do not. Why?
(b) Describe the type of hybridization, shape and magnetic property of [Co(NH₃)₄Cl₂]Cl. [Give: At. no.of Co=27]

3

(a)

Describe the limitations of valence bond theory.

3

(a)

Write the name and draw the structure of each of the following complex compounds:
(i) [Co(NH₃)₄(H₂O)₂]Cl₃
(ii) [Pt(NH₃)₄] [NiCl₄]

3

(a)

Draw the structures of optical isomers of:
(a) [Cr(C₂O₄)₃]^3-
(b) [PtCl₂(en)₂]²⁺
(c) [Cr(NH₃)₂Cl₂(en)]⁺

3

(a)

Draw figure to show splitting of d orbitals in an octahedral crystal field.

3

(a)

What is menat by unidentate, didentate and ambidentate ligands? Give twoo examples for each.

3

(a)