VNSGU MBBS Last 15 Years 2010-2025 Previous Question Papers (Veer Narmad South Gujarat University)
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| Roll No. | Total No. of Pages : 02 |
| Total No. of Questions : 09 |
M.Sc.(Chemistry) (2015 to 2017) (Sem.-2)
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SYMMETRY AND GROUP THEORY
Subject Code : MSCH-202
M.Code: 71663
| Time: 3 Hrs. | Max. Marks : 100 |
INSTRUCTIONS TO CANDIDATES :
- Attempt any FIVE questions in all, including question no. 1 which is compulsory and selecting one each from units I-IV
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- Answer briefly :
- Define point group and space group.
- What kind of improper rotation axis is present in ethane molecule?
- Write any two important rules for the great orthogonality theorem.
- Write all the symmetry elements present in CCl4 molecule.
- What is the difference between proper and improper rotation axis?
- What is the point group of ethylene molecule? How its point group is changed on dimerization?
- Write the irreducible representation formed by the [Ni(CN)4]2-.
- How d-orbital split in octahedral environment according to the symmetry?
- What does the symbol S, P, D and F stands for in Free Ion terms?
- What do you mean by the mulliken symbol T1g and Eu in the character table?
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10×2=20
UNIT-I
- a. Consider the following sequential structural changes (I?II?III). For each series indicate :
- Point group of each structure
- The specific symmetry elements lost or gained in the transition I ? II.
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I
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