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-IV
(Solid State Chemistry Quantum Chemistry)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. Explain intrinsic and extrinsic semiconductors. What are the applications of semiconductors
Explain hystercsis.
2. How the crystal planes are characterized How Miller indices helps in determing the
interplaner distance Calculate the interplanner distances of s.c., b.c.c. and f.c.c. crystals.
3. Discuss solid state defect with special reference to
Schotty defects
Frenkel defect
4. Derive the Schrödinger wave equation with respect to space.
5. Discuss the postulates of Quantum mechanics.
6. What are maximum electron density in H-atom in the 2s and 2p states.
7. Prove that an operator




dx
d
x
i
h


is not Hermitian.
8. Explain slater determinants. Deduce the ground and excited state antisymmetric wave
function for He atom is the Slater deterinantal form.
9. A hybrid orbitals has 20% and 80% p character. Give the expressions for the hybrid orbital
and determine the angle between them.
10. Generally organic solid are electrically insulators but few of them electrically conductor, why
Discuss the organic charge transfer complexes as superconductor.