Transcript Section 2.8 Naming Simple Compounds

Section 2.8
Naming Simple Compounds
Binary Covalent Compounds (Type III)
• 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.
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Section 2.8
Naming Simple Compounds
Prefixes Used to
Indicate Number in
Chemical Names
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Section 2.8
Naming Simple Compounds
Binary Covalent Compounds (Type III)
•
Examples:
CO2
Carbon dioxide
SF6
Sulfur hexafluoride
N2O4
Dinitrogen tetroxide
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Section 2.8
Naming Simple Compounds
Examples
N O
2
dinitrogen monoxide
NO
NO
nitrogen monoxide
2
nitrogen dioxide
PCl
5
Phosphorous pentachloride
N O
2 4
dinitrogen tetroxide
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Section 2.8
Naming Simple Compounds
Exercise
What is the name of the compound SeO2?
a)
b)
c)
d)
selenium oxide
selenium dioxide
selenium(II) oxide
selenium(IV) dioxide
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Section 2.8
Naming Simple Compounds
Exercise
A compound has the formula XCl3 where X
could represent a metal or nonmetal. What
could the name of this compound be?
a)
b)
c)
d)
phosphorus trichloride
carbon monochloride
tin(IV) chloride
magnesium chloride
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Section 2.8
Naming Simple Compounds
Concept Check
Name the following Covalent Compounds
CO
2
N O
2 4
Answers
SF
6
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Section 2.8
Naming Simple Compounds
Exercise
Which of the following compounds is named
incorrectly?
a) KNO3
b) TiO2
c) Sn(OH)4
d) PBr5
e) CaCrO4
potassium nitrate
titanium(II) oxide
tin(IV) hydroxide
phosphorus pentabromide
calcium chromate
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Section 2.8
Naming Simple Compounds
Exercise – mixed review
Examine the following table of formulas and names.
Which of the compounds are named correctly?
a)
b)
c)
d)
I, II
I, III, IV
I, IV
I only
Formula
Name
I
P2 O 5
Diphosphorus pentoxide
II
ClO2
Chlorine oxide
III
PbI4
Lead iodide
IV
CuSO4
Copper(I) sulfate
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Section 2.8
Naming Simple Compounds
Flowchart for Naming Binary Compounds
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