Question 1

Which of the following compounds is a molecular compound?

Accepted Answer

CO2

Question 2

What is the correct name for the compound $$\mathrm{N_2O}$$?

Accepted Answer

Dinitrogen monoxide

Question 3

Which of the following is the correct formula for sulfur hexafluoride?

Accepted Answer

$$\mathrm{SF_6$}$$

Question 4

How many total valence electrons are present in a molecule of $$\mathrm{$$PCl_3$$}$$?

Accepted Answer

28

Question 5

Which of the following elements is most likely to form multiple bonds (double or triple bonds) in a molecule?

Accepted Answer

Oxygen

Question 6

What is the correct Lewis structure for $$\mathrm{CO_2$}$$?

Accepted Answer

O=C=O, with each O atom having two lone pairs

Question 7

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between two nonmetal atoms

Question 8

What is the correct name for $$\mathrm{$$PCl_5$$}$$?

Accepted Answer

Phosphorus pentachloride

Question 9

Which of the following compounds contains a triple bond in its Lewis structure?

Accepted Answer

$$\mathrm{N_2$}$$

Question 10

A molecule of $$\mathrm{$$SiF_4$$}$$ has how many lone pairs of electrons on the central atom in its Lewis structure?

Accepted Answer

0

Question 11

Which of the following is the correct formula for dinitrogen trioxide?

Accepted Answer

$$\mathrm{N_2O_3}$$

Question 12

Which of the following statements is TRUE regarding the octet rule in Lewis structures?

Accepted Answer

Hydrogen atoms achieve stability with two electrons in their valence shell

Question 13

Which of the following is the correct name for $$\mathrm{PF_3$}$$?

Accepted Answer

Phosphorus trifluoride

Question 14

Which of the following best describes the difference between ionic and molecular compounds?

Accepted Answer

Ionic compounds are formed between metals and nonmetals, while molecular compounds are formed between nonmetals

Question 15

How many bonding pairs and lone pairs are present in the Lewis structure of $$\mathrm{F_2$}$$?

Accepted Answer

1 bonding pair, 6 lone pairs

Question 16

Which of the following is the correct Lewis structure for $$\mathrm{$$PCl_3$$}$$?

Accepted Answer

P in the center with three single bonds to Cl, and one lone pair on P

Question 17

Which of the following is the correct formula for phosphorus pentachloride?

Accepted Answer

$$\mathrm{$$PCl_5$$}$$

Question 18

A molecule of $$\mathrm{CO_2$}$$ contains how many double bonds?

Accepted Answer

2

Question 19

Which of the following is the correct name for $$\mathrm{$$CCl_4$$}$$?

Accepted Answer

Carbon tetrachloride

Question 20

Which of the following best explains why double and triple bonds form in some molecules?

Accepted Answer

Because there are not enough valence electrons to complete the octets with single bonds alone

Chemical Bonding: Molecular and Lewis Structures

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