Question 1

Which of the following best describes the difference between ionic and covalent bonds?

Accepted Answer

Ionic bonds involve the transfer of electrons from metals to nonmetals, while covalent bonds involve the sharing of electrons between nonmetals.

Question 2

A magnesium atom ($$\mathrm{Mg}) $$loses two electrons to form a magnesium ion. What is the correct symbol and charge for this ion?

Accepted Answer

$$\mathrm{Mg}^{2+}$$

Question 3

Which element will form an ion with the same number of electrons as neon ($$\mathrm{Ne}) $$when it loses one electron?

Accepted Answer

Sodium ($$\mathrm{Na})$$

Question 4

A chlorine atom ($$\mathrm{Cl}) $$gains one electron. What is the electron arrangement of the resulting ion?

Accepted Answer

$$2,8,8$$

Question 5

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

Accepted Answer

$$\mathrm{Cl}^{-}$$

Question 6

What is the correct formula for the ionic compound formed between aluminum ($$\mathrm{Al}^{3+}) $$and sulfide ($$\mathrm{S}^{2-}) $$ions?

Accepted Answer

$$\mathrm{Al}_2\mathrm{S}_3$$

Question 7

Which property is NOT characteristic of ionic compounds?

Accepted Answer

Low boiling points

Question 8

A pharmacy technician prepares a medication containing potassium iodide ($$\mathrm{KI}). $$What is the correct name for this compound?

Accepted Answer

Potassium iodide

Question 9

Which of the following best explains why sodium chloride ($$\mathrm{NaCl}) is $$electrically neutral?

Accepted Answer

The total positive charge equals the total negative charge: $$1(+1) + 1(-1) = 0$$

Question 10

What is the correct name for the compound $$\mathrm{MgCl}_2$$?

Accepted Answer

Magnesium chloride

Question 11

A patient is diagnosed with iron deficiency and prescribed iron(III) chloride. What is the correct formula for this compound?

Accepted Answer

$$\mathrm{FeCl}_3$$

Question 12

Which of the following ions is formed when sulfur gains two electrons?

Accepted Answer

$$\mathrm{S}^{2-}$$

Question 13

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

Accepted Answer

Calcium oxide

Question 14

Which of the following is the correct formula for sodium sulfide?

Accepted Answer

$$\mathrm{Na}_2\mathrm{S}$$

Question 15

A transition metal forms two ions: $$\mathrm{Fe}^{2+}$$ and $$\mathrm{Fe}^{3+}. $$What are the correct names for these ions?

Accepted Answer

Iron(II) and Iron(III)

Question 16

Which of the following compounds is formed when tin(IV) reacts with chloride ions?

Accepted Answer

$$\mathrm{SnCl}_4$$

Question 17

A compound contains $$\mathrm{Pb}^{2+}$$ and $$\mathrm{Cl}^{-}$$ ions. What is the correct formula for this compound?

Accepted Answer

$$\mathrm{PbCl}_2$$

Question 18

Which of the following best describes the process of forming an ionic bond between sodium and chlorine?

Accepted Answer

Sodium loses one electron and chlorine gains one electron, forming $$\mathrm{Na}^{+}$$ and $$\mathrm{Cl}^{-}$$ ions.

Question 19

What is the correct formula for aluminum nitride?

Accepted Answer

$$\mathrm{AlN}$$

Question 20

A patient receives a medication containing zinc chloride. What is the correct formula for zinc chloride?

Accepted Answer

$$\mathrm{ZnCl}_2$$

Ionic and Molecular Compounds: Structure, Formation, and Nomenclature

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