N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Chemistry, Part-I
PAPER-V
(Co-ordination Chemistry)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. Calculate the free ion ground state term and microstates of following configuration
Ti Cr Fe Se
Explain the quenching of d-orbital contribution
2. How does the d-orbital split in octahedral crystal field
Calculate the CFSE for d 3 d 4 and d 6 ion in octahedral field with strong and weak
ligand
3. S and P terms do not split in crystal field but D and F term split. Explain.
4. Draw Molecular Orbital diagram of 3
0 6
C CN .
5. Explain the selection rules for d-d transition When and why the selection rules break
down
What is Spectrochemical series
6. Discuss electronic spectra of d1 and d2 system in octahedral tetrahedral electrostatic
field.
Explain, by giving examples, John Tellor distortions.
7. Explain SN 1 dissociative and SN 2 associative reaction mechanism
8. Explain the following
Labile and inert complexes
Acid hydrolysis reaction
9. What is Trans-effect Explain the theory of Trans-effect.
10. Explain magnetic moment and magnetic susceptibility and establish relation between
them.
Determine the magnetic moment of following ions
Fe V Co