Quiz- VSEPR Theory

VSEPR Theory Quiz

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Test your knowledge on Valence Shell Electron Pair Repulsion (VSEPR) theory.

1. The geometry of the $BF_3$ molecule is:

• Tetrahedral
• Trigonal planar
• Pyramidal
• Linear

2. What is the shape of the $H_2O$ molecule?

• Linear
• Bent
• Trigonal planar
• Tetrahedral

3. The geometry of the $PCl_5$ molecule is:

• Trigonal planar
• Trigonal bipyramidal
• Octahedral
• Square planar

4. What is the shape of the $NH_3$ molecule?

• Tetrahedral
• Trigonal planar
• Pyramidal
• Linear

5. The correct order of repulsion between electron pairs is:

• Lone pair - lone pair > lone pair - bond pair > bond pair - bond pair
• Lone pair - bond pair > lone pair - lone pair > bond pair - bond pair
• Bond pair - bond pair > lone pair - bond pair > lone pair - lone pair
• Lone pair - lone pair = lone pair - bond pair = bond pair - bond pair

6. The bond angle in water ($H_2O$) is approximately $104.5^\circ$, which is less than the ideal tetrahedral angle of $109.5^\circ$. This is due to:

• Lone pair - lone pair repulsion
• Lone pair - bond pair repulsion
• Both (a) and (b)
• Steric hindrance

7. Which of the following molecules has a linear shape?

• $SO_2$
• $CO_2$
• $H_2S$
• $NH_3$

8. The geometry of the $SF_4$ molecule is:

• Tetrahedral
• Trigonal bipyramidal
• See-saw
• Square planar

9. Which of the following molecules has a square planar geometry?

• $XeF_4$
• $SF_4$
• $PCl_5$
• $H_2O$

10. The shape of the $I_3^-$ ion is:

• Tetrahedral
• Bent
• Linear
• Trigonal planar

11. Which of the following molecules has a trigonal planar geometry?

• $CO_3^{2-}$
• $NH_3$
• $SO_3^{2-}$
• $H_2O$

12. The bond angle of $CH_4$ is $109.5^\circ$. What is the bond angle of $NH_3$?

• $109.5^\circ$
• $107^\circ$
• $104.5^\circ$
• $120^\circ$

13. The geometry of the $SF_6$ molecule is:

• Tetrahedral
• Octahedral
• Square pyramidal
• Trigonal bipyramidal

14. What is the geometry of $CO_2$ according to VSEPR theory?

• Linear
• Bent
• Tetrahedral
• Trigonal planar

15. The shape of the $ICl_2^-$ ion is:

• Linear
• Bent
• Trigonal planar
• T-shaped

16. The bond angle in $NH_3$ is less than that of $CH_4$ because of:

• Lone pair - bond pair repulsion
• Lone pair - lone pair repulsion
• The electronegativity difference between N and H
• Steric hindrance

17. What is the shape of the $BrF_5$ molecule?

• Square pyramidal
• Pentagonal planar
• Octahedral
• Trigonal bipyramidal

18. Which of the following molecules has a T-shaped geometry?

• $SF_4$
• $ClF_3$
• $NH_3$
• $BF_3$

19. The bond angle in $SO_2$ is:

• Approximately $120^\circ$
• Approximately $109.5^\circ$
• Approximately $180^\circ$
• Exactly $120^\circ$

20. What is the number of lone pairs and bond pairs on the central atom in $XeF_4$?

• 2 lone pairs, 4 bond pairs
• 1 lone pair, 4 bond pairs
• 2 lone pairs, 6 bond pairs
• 4 lone pairs, 2 bond pairs

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