CSIR NET Coordination Chemistry Mock Test

Ni(CN4)²-  and Ni(Cl4)²- complex ions are :

The absorption spectrum of [Cr(NH3)6]
3+ in water shows two bands around 475 and 365 nm. The
ground term and the spin-allowed transitions, respectively, are

For trigonal bipyramidal coordination complex (ML5) the correct point group symmetry and the
relative order of the energies of the 3d orbitals in that crystal field, respectively are
(a) D3h; dx2-y2> dz2, >dxy>dxz, dyz      (b) D3d; dz2, >dxy, dx2-y2> dxz, dyz
(c) D3d; dx2-y2>dz2, dxy> dxz, dyz         (d) D3h; dz2,>dx2-y2, dxy> dxz, dyz

The number of CO bands for isomers from sets (i) and (ii) in their IR spectra

Set (i): Trigonal bipyramidal isomers, axial-Fe(CO)4L (A) and equatorial-Fe(CO)4L(B)
Set (ii): Octahedral isomers, fac-Mo(CO)3L3(C) and mer-Mo(CO)3L3 (D) are

Consider the following statements for the self-exchange electron transfer reaction in [Cr(H2O)6]^2+/3+
A. σ* orbitals are only involved in electron transfer
B. It involves large inner-sphere reorganization energy
C. It involves no change in M–L bond lengths
D. Rate of self-exchange electron transfer is fast
The correct statements are

Consider an octahedral complex Ma2b2cd, where a, b, c, and d are monodentate ligands. The number
of enantiomeric pairs for the complex is

The calculated heat of formation (∆Hf) for NaCl2 and CaF is

Which of the following statements regarding dissociative substitution in an octahedral transition metal
complex,
(1) High steric hindrance between ligands in the metal complex favours fast dissociation of ligand.
(2) Increased charge on the metal atom/ion of the complex favours the acceptance of electron pair
of the entering ligands.
(3) A penta-coordinated intermediate is observed.
(4) Nature of the entering ligand significantly influences the reaction.
Which are correct?

For the d³ electron configuration, the ground state term symbol is

The pair of compounds in which both members show LMCT band in their electronic spectra is

(a) [FeCl4]-² and [Fe(bpy)3]+²

(b) [FeBr4]-² and [TcO4]-

(c) [ReO4]- and [Ru(bpy)]+²

(d) [Fe(phen)3]+² and [FeCl4]-²