LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

WD 25

FIFTH SEMESTER – April 2009

CH 5506 – TRANSITION ELEMENTS AND NUCLEAR CHEMISTRY

 

 

 

Date & Time: 17/04/2009 / 9:00 – 12:00       Dept. No.                                                       Max. : 100 Marks

 

 

 

PART-A

 

Answer all the questions                                                                         (10 X 2 = 20) 

1. Most of the transition metals form coloured compounds. Explain.
2. Explain the terms Calcination and Roasting giving suitable examples.
3. What is meant by Half-life period of a radio active element?
4. Name the important mineral and its composition of lanthanides which occur in India.
5. Fill in the blanks.

1. ₇N¹⁴ + ₂He⁴ → ……. + ₁H¹
2. ₄Be⁹ + …… → ₆C¹² + ₀ n¹ +  5 MeV.

1. Complete the following.

1. ₉₂U²³⁸ + ₇N¹⁴ →  …….+ 4 ( ₀ n ¹ )
2. ……. + ₈O¹⁶ → ₁₀₀Fm²⁵⁰ + 4 ( ₀ n ¹)

1. Explain the co-ordination position isomerism with suitable example.
2. What is Spectrochemical series? Why is it so called?
3. Write down the general electronic configuration of actinides?
4. Define Binding energy of nucleus.

PART-B

 Answer any eight questions                                                                    ( 8 X 5 = 40)

1. Explain the extraction of Titanium from its chief ore.
2. Give an account of the various types of furnaces used in the extraction of metals.
3. What is Lanthanide contraction? What are the consequences of lanthanide contraction?
4. Give an account of magnetic and spectral properties of actinides.
5. Sketch all possible isomers of [Co( NH₃)₂(H₂O)₂Cl₂]⁺.
6. Discuss the application of Valence Bond theory to [Fe(CN)₆]^8- complex.
7. Discuss the cis-trans isomerism in 4 co-ordinate square planar complexes.
8. How will the n / p ratio influence the stability of the given nucleus?
9. Describe the application of neutron activation analysis in trace metal analysis with suitable example.
10. Describe the principle, working and uses of G.M. Counter.
11. Explain the salient feature of Shell model.
12. Discuss the Atomic Power Projects in India.

 

PART-C

 Answer any four questions                                                                (4 X 10 = 40)

1. Discuss the preparation and applications of any four compounds of transition

elements, which act as industrial catalyst.

24.a) What are inner transition elements? Comment on their position in the periodic table.

1. b) Describe how lanthanides were successfully separated by ion-exchange
2. a)What is a Chelate? What are the factors which affect the stability of chelates.
3. b) How are chelate formation useful in i) Volumetric analysis and ii) Gravimetric analysis.

1. a)Discuss the splitting of “d” orbitals of metal in square planar complexes with diagram.

b)What are the merits and demerits of Crystal Field Theory?

27. Write short notes on a) Atomic bomb b) Hydrogen bomb
28. Describe the Principle, construction, working and applications of a nuclear reactor.

 

Go To Main Page

Latest Govt Job & Exam Updates:

View Full List ...