section 2.8 naming simple compounds return to toc 1 formed between two nonmetals. 1.the first...

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Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals . 1. The first element in the formula is named first, using the full element name. 2. The second element is named as if it were an anion. 3. Prefixes are used to denote the numbers of atoms present. Binary Covalent Compounds (Type III)

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Page 1: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

1

• Formed between two nonmetals.

1. The first element in the formula is named first, using the full element name.

2. The second element is named as if it were an anion.

3. Prefixes are used to denote the numbers of atoms present.

4. The prefix mono- is never used for naming the first element.

Binary Covalent Compounds (Type III)

Page 2: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

2

Prefixes Used to Indicate Number in Chemical Names

Page 3: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

3

• Examples:

CO2 Carbon dioxide

SF6 Sulfur hexafluoride

N2O4 Dinitrogen tetroxide

Binary Covalent Compounds (Type III)

Page 4: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

Examples

N2

O

dinitrogen monoxide

NO

nitrogen monoxide

NO2

nitrogen dioxide

N2

O4

dinitrogen tetroxide

PCl5

Phosphorous pentachloride

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Page 5: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

5

Exercise

What is the name of the compound SeO2?

a) selenium oxide

b) selenium dioxide

c) selenium(II) oxide

d) selenium(IV) dioxide

Page 6: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

6

Exercise

A compound has the formula XCl3 where X could represent a metal or nonmetal. What could the name of this compound be?

a) phosphorus trichloride

b) carbon monochloride

c) tin(IV) chloride

d) magnesium chloride

Page 7: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

Concept Check

Name the following Covalent Compounds

CO2

SF6

N2

O4

Carbon dioxide

Sulfur hexafluoride

Dinitrogen tetroxide

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Page 8: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

8

Exercise

Which of the following compounds is named incorrectly?

a) KNO3 potassium nitrate

b) TiO2 titanium(II) oxide

c) Sn(OH)4 tin(IV) hydroxide

d) PBr5 phosphorus pentabromide

e) CaCrO4 calcium chromate

Page 9: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

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Exercise – mixed review

Examine the following table of formulas and names. Which of the compounds are named correctly?

a) I, II

b) I, III, IV

c) I, IV

d) I only

Formula Name

I P2O5 Diphosphorus pentoxide

II ClO2 Chlorine oxide

III PbI4 Lead iodide

IV CuSO4 Copper(I) sulfate

Page 10: Section 2.8 Naming Simple Compounds Return to TOC 1 Formed between two nonmetals. 1.The first element in the formula is named first, using the full element

Section 2.8

Naming Simple Compounds

Return to TOC

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Flowchart for Naming Binary Compounds