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, 2017
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. Discuss the reaction mechanism of substitution reaction in octahedral complex along with the
factors that causes complication.
2. Explain magnetic moment and magnetic susceptibility and establish relationship
between them.
Calculate the free ion ground term for

3. Define stepwise and over all stability constant. How they are related to each other.
4. A convincing evidence of metal-ligand overlap is obtained from Neptielauxetic effect.
Explain it.
How the conclusion obtained from Nephelauxetic effect is supported by Electron
Paramagnetic- Resonance and Nuclear Magnetic Resonance.
5. Explain the origin of magnetic moment in atom molecule or ion. Derive an equation to
determine orbital magnetic moment value. Give its unit.
6. What do you understand by crystal field stabilization energy in complexes What are the
factors which determine the crystal field stabilization energy. Justify the order
.
7. Explain the multiplet width. Explain population of J level in context to KT.
8. Find out total microstate term and term symbols of d² system and determine the ground state
term.
9. Explain Russel and Saunder's coupling scheme. Calculate free ion ground state term for the
following
Ni Cr Ti 2 Co 2
10. Write notes on the following
Limitation of Crystal Field Theory
John Teller Effect.