2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper for exam preparation. Question paper for 2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper, 2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper. SiteMap
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2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper

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2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper
B.Sc. (H.S.) in Chemistry 1st Semester
2125
PAPER - Chem - 101
Basic Inorganic Chemistry

Time Allowed : 3 hours

Maximum Marks : 75

Section - A

Note : Attempt all parts. Each part carries one and a half (1(1/2)) marks anwer to every part should not exceed one-third (1/3rd) of a page.

1.

(a) Giva an example of each of the molecule with highly ionic bond, a mainly covalent bond and a highly polarised covalent bond.

(b) Distinguish between an "orbit" and an "orbital".

(c) What is a radial distribution of a function? Draw this function for 1s and 2s orbitals in a hydrogen atom.

(d) Which of the orbitals 1p, 2s, 2p, 3f and 2d are not possible Give reasons.

(e) Does electron affinity of an element represent energy absorbed or energy released?

(f) Second ionization potential of Lithium is very high as compared to the first ionization potential. Explain.

(g) refer attachment

(h) How is the strength of a chemical bond related to the extent of overlapping of orbital?

(i) Which is larger ?
refer attachment

(j) refer attachment

Section - B

Note : Attempt any eight questions. Each question carries four and a half (4(1/2)) marks and answer to each of these should not exceed 2-pages.

2. How does the Bohr's theory of Hydrogen Atom differ from that of Schrodinger's?

3. Use the MO theory to predict the bond order and the number of unpaired electrons in
(refer attachment)

4. Explain why electrical conductivity of a metal decreases as the temperature is raised, but the opposite occurs with semiconductors ?

5. (a) What are Fajan's rules?
(b) (refer atachment)

6. (refer attachment)

7. Explain how electrical conduction is associated with the defects that occur in the solid state?

8. How does the Pauli's Exclusion Principle enable us to fix the number of electrons in each principal quantum level of an atom?

9. Why is the decrease in size of Lithium and Beryllium much greater than between Sodium and Magnesium or Potassium and Calcium ?

10. The electronic configurations and positions of heavier elements in the periodic table are controversial. Comment.

11. What is Lanthanide contraction and what are its consequences ?

12. Why do the Lanthanide ions give rise to very sharp bands in their electronic spectra ?

13. Enlist the different scales of electronegativity anb briefly describe the theoretical basis behind each of these.

Section - C

Note : Attempt any two questions. Each question carries 12 marks and the answer to each question should not exceed 5 pages.

14. Write down the Borne-Lande's equation and define the terms involved in it. Use this equation to show why some crystals, which according to the radius ratio concept should adopt in coordination number of 8, in fact, have a coordination of 6.

15. (a) Distinguish between the folowing aspects of structure of an atom :
(i) The angular probability function and the radial probability function.
(ii) Contour map of electron density.
(iii) Shapes of p and d orbitals.

(b) Sketch the appropriate radial distribution function for 2p, 3p and 4p orbitals in a hydrogen atom.

16. (a) Describe the structure of interstitial and substitutional alloys and outline the factors determining which is formed.
(b) What is superconductivity ? What uses and potential uses are there for superconductors? What materials are superconductors?


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2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper for exam preparation. Question paper for 2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper, 2005 Guru Nanak Dev University B Sc Chemistry BASIC INORGANIC CHEMISTRY Chem 101 Dec 2k5 Question paper