Question 1

Which of the following molecules has a trigonal planar molecular geometry and bond angles of $$120^\circ$$?

Accepted Answer

BF$$_3$$

Question 2

What is the molecular geometry and approximate bond angle of the central atom in SiCl$$_4$$?

Accepted Answer

Tetrahedral; $$109.5^\circ$$

Question 3

Which of the following molecules is nonpolar due to its molecular geometry, even though it contains polar bonds?

Accepted Answer

CO$$_2$$

Question 4

Which intermolecular force is present in all molecules, regardless of their polarity?

Accepted Answer

Dispersion (London) forces

Question 5

Rank the following compounds from lowest to highest boiling point: CH$$_4$$, H$$_2S$$, H$$_2O$$, NaCl.

Accepted Answer

CH$$_4$$ \u003c H$$_2S$$ \u003c H$$_2O$$ \u003c NaCl

Question 6

Which of the following molecules can form hydrogen bonds among themselves?

Accepted Answer

H$$_2O$$

Question 7

What is the hybridization of the central atom in SF$$_6$$?

Accepted Answer

$$sp^3d^2$

Question 8

Which of the following best explains why butane (CH$$_3CH$_2CH$_2CH$_3) $$has a higher boiling point than propane (CH$$_3CH$_2CH$_3$$)?

Accepted Answer

Butane is more polarizable, leading to stronger dispersion forces.

Question 9

Which type of intermolecular force is primarily responsible for the high boiling point of water?

Accepted Answer

Hydrogen bonding

Question 10

A molecule has the formula AB$$_3E. $$What is its molecular geometry and approximate bond angle?

Accepted Answer

Trigonal pyramidal; $$107.3^\circ$$

Question 11

Which of the following molecules has a square planar geometry?

Accepted Answer

XeF$$_4$$

Question 12

Which statement best describes the difference between molecular geometry and electron domain geometry?

Accepted Answer

Molecular geometry considers only the arrangement of atoms, while electron domain geometry considers both atoms and lone pairs.

Question 13

Which of the following molecules is expected to have only dispersion forces as its intermolecular force?

Accepted Answer

CH$$_4$$

Question 14

What is the hybridization of the central atom in BeCl$$_2$$?

Accepted Answer

$$sp$$

Question 15

Which of the following molecules has a bent molecular geometry due to the presence of two lone pairs on the central atom?

Accepted Answer

H$$_2O$$

Question 16

Which of the following statements about hydrogen bonding is correct?

Accepted Answer

Hydrogen bonding requires hydrogen to be bonded to N, O, or F.

Question 17

Which of the following molecules will have the strongest ion-dipole interaction with water?

Accepted Answer

Mg$$^{2+}$$

Question 18

How many sigma and pi bonds are present in the molecule C$$_2H$_4 ($$ethene)?

Accepted Answer

5 sigma, 1 pi

Question 19

Which of the following best describes the bonding in benzene (C$$_6H$_6$$)?

Accepted Answer

The pi electrons are delocalized over the entire ring.

Question 20

Which of the following molecules has a seesaw molecular geometry?

Accepted Answer

SF$$_4$$

Chapter 7: Molecular Geometry, Intermolecular Forces, and Bonding Theories – Study Notes

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