M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Chemistry
INORGANIC CHEMISTRY I
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is meant by bond order? Give the relationship with
bond energy.
2. Explain the Lewis concept of acid and bases.
3. In what ways sigma bond differs form pi bond?
4. Predict the geometry of SF4 using hybridization.
5. What is Schottky effect?
6. Explain the conductivity mechanism of n-type semi
conductors.
7. What is the styx number of B3H7?
8. Give the general formula of ortho silicate and pyro
silicate.
9. Mention the uses of thoria.
10. Calculate the EAN of Fe(CO)5.
Sub. Code
4MCH1C2
AFF-4877
2
Ws3
Part B x 5 25)
Answer all questions.
11. Discuss the partial ionic character of covalent bond
with suitable examples.
Or
Write a note on bond polarity.
12. Draw and explain MO diagram of HF molecule.
Or
Construct the wave function of Sp2 hybridisation.
13. Explain the band theory of solids.
Or
What is semiconductor? How are they classified?
Mention its applications.
14. How is B4H10 prepared? Mention the type and its
structure.
Or
How are isopoly acids classified? Explain the
structure of poly tungstate ion.
15. Describe the extraction of beryllium from its ore.
Or
Discuss the structure of cobalt carbonyls.
AFF-4877
3
Ws3
Part C x 10 30)
Answer any three questions.
16. Define electron affinity and electronegativity.
Explain their periodic variations.
What is HSAB principle? Discuss their applications.

17. Draw and explain the MO diagram of carbonate ion.
18. Discuss in detail about the role of semiconductors in solar
energy conversion.
19. Explain the wades rule in the classification borane
and carborane.
Write a note on clathrates and their applications.
20. Mention the preparation and uses of Beryllium
acetate.
Discuss the structure and bonding of ferrocene.
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