Master of Science II (Physical Chemistry)
Examination: Oct Nov 2016 Semester III (Old CGPA)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SD
235
Wednesday
16/11/2016
02:30 P.M
to
05:00 P.M
Quantum Chemistry
C
IX
Instructions: Answer any five questions.
All questions carry equal marks.
(Section-I) Q.1 is compulsory.
Attempt any two questions from Section II and any two
questions from Section III
Answer to all questions (Section II, III) should be written in
the one answer book.
Use of log table and calculators in allowed.
Figures to the right indicate full marks.
Total Marks:70
SECTION I
Q.1 Answer the following: 14
Mention any two Bohr's fundamental assumptions.
Put the condition for orthogonalization.
What do you mean by threshold frequency of a photoelectric surface?
Calculate the de Broglie wavelength of 0.150 g particle moving with the
speed of 200 cm/s.
Write down the expression for overlap integral.
Sketch Ψ2 plots for particle moving in our dimensional box of length nm.
Write recursion formula.
What do you mean by eigen value and eigen function?
What is the principle of variation method?
Construct the secular determinant for trimetylenemethane modecule.
Define free valence index.
Why is the wave nature of matter not more apparent in our daily observations?
Give the expression for liner momentum operator in three dimensions.
Classical frequency of oscillation is given by the expression
SECTION II
Q.2 What is Hermitian type of operator? Give the properties of it. 07
Describe quantum mechanical approach of photoelectric effect. 07
Q.3 Discuss Slater and Guassian type of orbitals. 07
Discuss in detail the radial plots for hydrogen atom. 07
Q.4 Using HMO Theory, calculate B and delocalization energy of
1,3-butadience.
07
Using method of separation of variables break up the Schrodinger wave
equation for rigid rotator in to ordinary angular equations.
07
SECTION III
Q.7 Write a note on any three of the following: 14
Basis postulates of quantum mechanics
Hermit polynomials
De Broglie hypothesis
Perturbation theory