Naming Covalent Compounds
Day 2 Nomenclature
Bell Ringer
Complete the chart for the following compounds using the rules
for Naming Type I and Type II Compounds.
Formula
Type
Compound Name
Calcium Bromide
PbO
Iron (II) Oxide
SnO
BaCl2
Review - What is a covalent
compound?
 Covalent compound: forms between 2 nonmetals
 Remember when Hydrogen bonds with a nonmetal this is a
covalent compound too!
 Example: CO2, H2O, etc
Naming Covalent Compounds
Type III
1. The first element in the compound is named first using
the name of the element
2. The second element is named as though it were an
anion (obviously it isn’t really an anion since it is
covalent); so the root word + the suffix “ide”
3. Prefixes are used to denote the numbers of each atom
present (exception: the prefix “mono” is never used with
the first element); CO is called carbon monoxide, not
monocarbon monoxide
Ex: Co2 would be named: Carbon Dioxide
List of Prefixes
(you will have a copy at your table)
Number of Atoms
Prefix
1
Mono-
2
Di-
3
Tri-
4
Tetra-
5
Penta-
6
Hexa-
7
Hepta-
8
Octa-
9
Nona-
10
Deca-
Table Group Problems:
1.
2.
3.
4.
5.
6.
N2O
NO2
N2O3
N2O4
Phosphorous Pentachloride (write the formula)
SO2
Table Group Answers:
1. Dinitrogen Oxide
2. Nitrogen dioxide
3. Dinitrogen trioxide
4. Dinitrogen Tetraoxide
5. PCl5
6. Sulfur Dioxide
Naming Acids
 What ion do all acids have in common????
 Has an H+ in its formula!! Typically the hydrogen cation is
written first!
 Example of a classic acid: HCl for hydrochloric acid
 You are now going to learn the rules for naming acids
Rules for Naming Acids:
 Rules for Naming Acids that Do Not Contain Oxygen in
the Anion:
 Since all these acids have the same cation, H+, we don't
need to name the cation.
 The acid name comes from the root name of the anion
name.
 The prefix hydro- and the suffix -ic are then added to the
root name of the anion.
 Example: HCl would be named as:
 Hydrochloric Acid
Table Group Problems:
HF
2. Hydrobromic Acid
3. HCl
4. Hydroiodic Acid
1.
Answers to Table Group Problems:
1. Hydrofluoric Acid
2. HBr
3. Hydrochloric Acid
4. HI
Independent Practice:
 Using your notes do more practice problems naming covalent
compounds and acids (that do not contain oxygen)
 We will go over the answers at the end
 Make sure you do EVERY problem so you are ready to get
that 100% on the exit slip…
Exit Slip
1. What makes up a covalent compound?
2. Your classmate was given the compound CO and named
the it Monocarbon Monoxide. Explain why his answer is
correct or incorrect. If incorrect- write the correct
nomenclature
3. Name the following: HF
4. Name the following: NO
5. Provide the chemical formula for: Sulfur Hexafluoride