Question 1

Which of the following statements best explains why sodium (Na) forms a $$\mathrm{Na^+}$$ ion when it reacts with chlorine (Cl) to form sodium chloride (NaCl)?

Accepted Answer

Sodium loses one electron to achieve the electron configuration of neon.

Question 2

What is the correct name for the compound $$\mathrm{Mg(NO_3$)_2}$$?

Accepted Answer

Magnesium nitrate

Question 3

Which of the following molecules is nonpolar, despite containing polar bonds?

Accepted Answer

SiCl$$_4$$

Question 4

What is the correct formula for aluminum sulfide?

Accepted Answer

$$\mathrm{Al_2S_3}$$

Question 5

Which of the following best describes the bonding and structure in carbon dioxide ($$\mathrm{CO_2$}$$)?

Accepted Answer

Linear molecule with two polar bonds that cancel, making the molecule nonpolar.

Question 6

Which of the following ions is isoelectronic with neon ($$\mathrm{Ne}$$)?

Accepted Answer

$$\mathrm{Na^+}$$

Question 7

Which intermolecular force is primarily responsible for the high boiling point of water ($$\mathrm{H_2O}$$)?

Accepted Answer

Hydrogen bonding

Question 8

What is the correct name for $$\mathrm{K_2SO_4}$$?

Accepted Answer

Potassium sulfate

Question 9

Which of the following compounds contains both ionic and covalent bonds?

Accepted Answer

$$\mathrm{$$NaNO_3$$}$$

Question 10

Which of the following best describes the trend in electronegativity across a period from left to right?

Accepted Answer

Electronegativity increases

Question 11

What is the correct formula for dinitrogen trioxide?

Accepted Answer

$$\mathrm{N_2O_3}$$

Question 12

Which of the following molecules has a trigonal pyramidal shape according to VSEPR theory?

Accepted Answer

$$\mathrm{NH_3$}$$

Question 13

Which of the following is the correct name for $$\mathrm{$$FeCl_3$$}$$?

Accepted Answer

Iron(III) chloride

Question 14

Which of the following best explains why $$\mathrm{Cl_2$} is a $$nonpolar molecule?

Accepted Answer

It contains a nonpolar covalent bond between identical atoms.

Question 15

Which of the following compounds will have the highest melting point?

Accepted Answer

$$\mathrm{KBr}$$

Question 16

What is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 17

Which of the following best describes the bonding in $$\mathrm{H_2O}$$?

Accepted Answer

Two polar covalent bonds and a bent molecular shape

Question 18

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 19

Which of the following best describes the difference between an ionic bond and a covalent bond?

Accepted Answer

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Question 20

Which of the following molecules can form hydrogen bonds with itself?

Accepted Answer

$$\mathrm{H_2O}$$

Chapter 6: Ionic and Molecular Compounds – Structure, Bonding, and Properties

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