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C 22062 (Pages : 2) फिल्लाव16.....०००००००००००००००००००० ०००० ००००००००००००

SECOND SEMESTER (CBCSS—UG) DEGREE EXAMINATION
APRIL 2022
Chemistry
CHE 2B 02—THEORETICAL AND INORGANIC CHEMISTRY—II
(2021 Admissions)
Time : Two Hours Maximum : 60 Marks
Section A (Short Answers)

Answer at least eight questions.
Each question carries 3 marks.
All questions can be attended.

Overall Ceiling 24.

1. Explain how the shape of p orbitals are deduced on the basis of angular wave functions.

2. Calculate the short and long wavelength limits of the Balmer series in the spectrum of hydrogen
atom.

3. Explain the characteristics of curves for the emission of radiations from a black body at different
temperatures.

Demonstrate photoelectric effect on the basis of quantum theory.

What is Hamiltonian operator ?

What is the significance of y and y? ?

On the basis of MOT, show that the existence of stable Be, molecule is not possible.

Describe sp? hybridization with a suitable example.

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What is variation principle ?

10. Write down the common features among VBT and MOT.

11. Comment on the magnetic property of C, molecule.

12. IMlustrate the combination of two p, atomic orbitals to form molecular orbitals.

(8 x 3 = 24 marks)

Turn over

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