Question 1

According to VSEPR theory, what is the electronic geometry of a molecule with four electron domains around the central atom?

Accepted Answer

Tetrahedral

Question 2

Which of the following molecules has a bond angle closest to $$120^{\circ}$$?

Accepted Answer

BF$$_3$$

Question 3

What is the molecular geometry of SO$$_2$$ according to VSEPR theory?

Accepted Answer

Bent

Question 4

A molecule has 5 electron domains around its central atom. What is its electronic geometry?

Accepted Answer

Trigonal bipyramidal

Question 5

Which statement best describes the difference between Lewis structures and ball-and-stick models?

Accepted Answer

Lewis structures focus on bond types and non-bonding electrons, while ball-and-stick models show 3D structure and bond angles.

Question 6

What is the bond angle in a molecule with tetrahedral electronic geometry?

Accepted Answer

$$109^{\circ}$$

Question 7

In the molecule NH$$_3$$, what is the molecular geometry and approximate bond angle?

Accepted Answer

Pyramidal, $$107^{\circ}$$

Question 8

Which of the following best explains why the bond angle in H$$_2O is $$less than $$109^{\circ}$$?

Accepted Answer

The repulsion between lone pairs is greater than between bonding pairs

Question 9

A molecule has 6 electron domains around the central atom, with 5 bonding domains and 1 nonbonding domain. What is its molecular geometry?

Accepted Answer

Square pyramidal

Question 10

Which of the following molecules is linear according to VSEPR theory?

Accepted Answer

CO$$_2$$

Question 11

How many electron domains are present around the central atom in PF$$_5$$?

Accepted Answer

5

Question 12

Which of the following is true about electron domains in VSEPR theory?

Accepted Answer

Single, double, triple bonds and lone pairs each count as one electron domain.

Question 13

What is the molecular geometry of a molecule with three electron domains, two bonding domains, and one nonbonding domain?

Accepted Answer

Bent

Question 14

Which molecule would have a bond angle slightly less than $$120^{\circ}$$ due to the presence of a lone pair?

Accepted Answer

SO$$_2$$

Question 15

A molecule with the formula CCl$$_4$$ has which molecular geometry?

Accepted Answer

Tetrahedral

Question 16

Which of the following best describes the arrangement of electron domains in SF$$_6$$?

Accepted Answer

Octahedral

Question 17

In the molecule H$$_2CO$$, what is the electronic geometry about the central carbon atom?

Accepted Answer

Trigonal planar

Question 18

Which of the following molecules has a square pyramidal molecular geometry?

Accepted Answer

BrF$$_5$$

Question 19

What is the bond angle in a molecule with a trigonal bipyramidal electronic geometry?

Accepted Answer

$$90^{\circ}$$ and $$120^{\circ}$$

Question 20

Which real-world molecule is best described by a bent molecular geometry due to lone pair repulsion?

Accepted Answer

H$$_2O$$

Molecular Geometry and VSEPR Theory: Shapes of Molecules

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