Monatomic Ions

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Naming Ions > Monatomic Ions

Ions of Transition Metals

How are the charges of some transition metal ions determined?

8.2


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The charges of the cations of many transition metal ions must be determined from the number of electrons lost.

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These colorful solutions contain the transition metal ions Co3+, Cr3+, Fe3+, Ni2+, and Mn2+.

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Two methods are used to name the ions of transition metals.

• The Stock system

• The classical method

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In the Stock system, a Roman numeral in parentheses is placed after the name of the element to indicate the numerical value of the charge.

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In an older less, useful method, the classical name of the element is used to form the root name for the element.

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Naming Ions > Monatomic Ions9.1


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Conceptual Problem 9.1

1.1


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1.1


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1.1

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Naming Ions > Polyatomic Ions

Some ions, called polyatomic ions, are composed of more than one atom.

The names of most polyatomic anions end in -ite or -ate.

9.1

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Naming Ions > Polyatomic Ions

Names and Formulas of Some Common Polyatomic Ions

9.1

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Naming Ions > Compounds With Polyatomic Ions

Compounds with Polyatomic Ions

How do you write the formulas and names of compounds containing polyatomic ions?

9.2

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Naming Ions > Compounds With Polyatomic Ions

Write the symbol for the cation followed by the formula for the polyatomic ion and balance the charges.

9.2

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Naming Ions >


9.3

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Naming Ions >


9.3

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Naming Ions >


9.3

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Naming Ions >

Practice Problems For Conceptual Problem 9.3

Problem-Solving 9.12 Solve Problem 12 with the help of an interactive guided tutorial.

for Conceptual Problem 9.3


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Section Quiz

-or-Continue to: Launch:

Assess students’ understanding of the concepts in Section 9.1.

9.1 Section Quiz.


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9.1 Section Quiz.

1. When metals from groups 1A, 2A, and 3A form cations, the charge on the ion is equal to

a. 8 minus the group number.

b. the group number minus 8.

c. the period number.

d. the group number.


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2. Which of the following are positively charged polyatomic ions?

a. (I) ammonium ion

b. (II) perchlorate ion

c. (III) ferric ion

a. I only

b. II only

c. III only

d. I and III

9.1 Section Quiz


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3. If the name of an ion ends in -ite or -ate, the ion is a

a. polyatomic cation.

b. polyatomic anion.

c. transition metal cation.

d. monatomic anion.

9.1 Section Quiz


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9.2 Section Quiz

1. The correct name for CrCl3 is

a. chromium chlorine.

b. chromium(III) chloride.

c. monochromium trichloride.

d. chromium(III) trichloride.


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2. What is the correct formula for strontium nitride?

a. Sr3N2

b. SrN2

c. Sr2N3

d. Sr3N

9.2 Section Quiz


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3. Which one of the following compounds is named correctly?

a. sodium chlorite, NaClO

b. potassium nitrate, KNO2

c. sodium acetate, NaC2H3O2

d. lithium sulfate, Li2SO3

9.2 Section Quiz

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Monatomic Ions