Ch5.7

Question 1

How do you name a monatomic cation?

Answer 1

Use the element name followed by “ion” (e.g., Na⁺ = sodium ion).

Question 2

How do you name a monatomic anion?

Answer 2

Use the element stem + “-ide ion” (e.g., Cl⁻ = chloride ion).

Question 3

What does the Stock system use to show a metal’s charge?

Answer 3

Roman numerals in parentheses (e.g., Fe²⁺ = iron(II) ion).

Question 4

In the common system, what do “-ous” and “-ic” mean?

Answer 4

“-ous” = lower charge, “-ic” = higher charge (e.g., ferrous = Fe²⁺, ferric = Fe³⁺).

Question 5

How are binary ionic compounds named?

Answer 5

Cation name + anion name with “-ide” (e.g., CaCl₂ = calcium chloride).

Question 6

Do subscripts in a formula affect the compound’s name?

Answer 6

No, they do not affect how it’s named.

Question 7

How do you name an ionic compound with a polyatomic ion?

Answer 7

Name the cation, then the polyatomic ion (e.g., NaNO₃ = sodium nitrate).

Question 8

How do you write the name for Fe(NO₃)₃?

Answer 8

Iron(III) nitrate (because Fe has a 3+ charge here).

Question 9

What is a hydrate?

Answer 9

An ionic compound with water molecules in its structure.

Question 10

How do you write and name a hydrate?

Answer 10

Use a dot and H₂O (e.g., CuSO₄·5H₂O = copper(II) sulfate pentahydrate).