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- 1. Multiple Choice
1. If all the atoms are reflected across the plane which perpendicular to its principal axis and the molecule having unchanged in configuration, the plane is called as ____________________________.
Vertical reflection plane
Diagonal reflection plane
Horizontal reflection plane
Dihedral reflection plane
- 2. Multiple Choice
Below is a molecule of AX4 with different view. What is the possible axis of symmetry for this molecule?
C4
C2
C3
No answer
- 3. Multiple Choice
Molecule of CH3Cl (tetrahedral) can have plane of symmetry. Which below answer is the most accurate?
Three of vertical symmetry planes
One of horizontal symmetry plane
One of vertical symmetry plane
Two of dihedral symmetry planes
- 4. Multiple Choice
All the following images have centre of symmetry, EXCEPT? All the images are planar
Image A
Image B
Image C
Image D
- 5. Multiple Choice
Which of the following symmetry operation does NOT contain in the image of test tube (not planar)?
Centre of symmetry
C6 rotation
vertical sigma plane
C8 rotation
- 6. Multiple Choice
BH3 and NH3 possess trigonal planar and trigonal pyramidal structures, respectively. What symmetry elements possessed by both molecules?
Centre of symmetry
vertical sigma plane
horizontal sigma plane
S3 improper rotation
- 7. Multiple Choice
Which of the following image has C2 that perpendicular to its principal Cn axis?
Image 1
Image 2
Image 3
No answer
- 8. Multiple Choice
Complex of [Re2Cl8]2− is shown below. Predict how many C2 rotation is allowed?
2
3
4
5
- 9. Multiple Choice
Determine the point group for the following structure of n6-C6Me6
C6h
C6v
D6h
D6v
- 10. Multiple Choice
Determine the point group of the below molecule of SF5Cl
C2v
D4v
D2h
C4v
- 11. Multiple Choice
Predict which molecule contain S4 without C4 axis?
TPY = trigonal pyramid, SP = square planar, T= tetrahedral
PBr3 (TPY)
ICl4- (SP)
[SO4]2- (T)
ICl2Br2 (SP)
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