Question 1

Which of the following best describes the process by which an ionic bond forms between sodium and chlorine atoms?

Accepted Answer

Sodium loses an electron and chlorine gains an electron, resulting in oppositely charged ions that attract each other.

Question 2

Which property is most characteristic of ionic compounds such as NaCl at room temperature?

Accepted Answer

They are brittle solids with high melting and boiling points.

Question 3

What happens to the ionic radius of an atom when it gains electrons to become an anion?

Accepted Answer

The ionic radius increases.

Question 4

Which of the following statements about covalent bonds is correct?

Accepted Answer

Covalent bonds involve the sharing of valence electrons between nonmetal atoms.

Question 5

Which compound is expected to have the lowest boiling point?

Accepted Answer

SO2

Question 6

How many bonds and lone pairs are typically found around an oxygen atom in a neutral molecule?

Accepted Answer

2 bonds, 2 lone pairs

Question 7

Which of the following molecules requires multiple bonds in its Lewis Dot Structure to satisfy the octet rule?

Accepted Answer

CO2

Question 8

Which statement best describes the relationship between bond length and bond strength for a series of compounds involving bonds between the same two atoms?

Accepted Answer

The greater the bond strength, the shorter the bond.

Question 9

Which of the following is a correct Lewis Dot Structure rule for ions?

Accepted Answer

Anions have more valence electrons than their neutral atom.

Question 10

Which of the following elements is most likely to form an expanded octet in a stable compound?

Accepted Answer

Sulfur

Question 11

According to VSEPR theory, what is the electron geometry around the central atom in carbon disulfide, CS2?

Accepted Answer

Linear

Question 12

What is the ideal bond angle for a molecule with four electron groups and no lone pairs on the central atom?

Accepted Answer

$$109.5^\circ$$

Question 13

Which of the following bonds is the most polar based on electronegativity differences?

Accepted Answer

S–F

Question 14

Calculate the difference in electronegativity values between carbon and fluorine. (C: 2.5, F: 4.0)

Accepted Answer

$$1.5$$

Question 15

Which of the following molecules is nonpolar due to its perfect shape?

Accepted Answer

CO2

Question 16

Which of the following best describes the bond between two bromine atoms?

Accepted Answer

Pure covalent

Question 17

Which of the following compounds is most similar in properties to sodium chloride, NaCl?

Accepted Answer

Potassium bromide, KBr

Question 18

Which of the following statements about resonance structures is correct?

Accepted Answer

Resonance structures involve the movement of electrons only.

Question 19

Which of the following elements has the highest electronegativity?

Accepted Answer

Nitrogen

Question 20

Which of the following best explains why ionic compounds conduct electricity when dissolved in water?

Accepted Answer

The ions are free to move and carry charge in solution.

Ch.12 Chemical Bonding: Structured Study Notes

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