What’s in a name?• When two people use different names for
the same thing, misunderstood words are apt to happen. The British and Americans often get confused.
Find the bonnet. Find the boot.
American English
British English
American English
British English
Which is the chemist and which is the pharmacist?
In Ireland and England, the people who Americans call pharmacists are called chemists
American English
British English
Which is plaster and which is a band-aid?
Plaster: American English
Plaster: British English
Kerosene: American English
Paraffin: British English Paraffin:
American English
Nomenclature• A System of Naming Compounds
• Compounds are two or more atoms of different elements bonded together.
• Even though the gases O2, N2, F2, and Cl2 travel in pairs, their names are simply oxygen, nitrogen, fluorine, and chlorine.
METALS vs. Non-METALS
F2 & Cl2 (Fluorine & chlorine gas)
HF(g) Hydrogen Fluoride
HCl(g) Hydrogen Chloride
H2S Dihydrogen Sulfide
HCN – Hydrogen cyanide
NO - NO2- NO3 - N2O
Cl2O dichlorine monoxide
NH3 Ammonia
PCl3 Phosphorus trichloride
mono- 1 hepta- 7 di- 2 octa- 8 tri- 3 nona- 9 tetra- 4 deca- 10 penta- 5 undeca- 11 hexa- 6 dodeca- 12
In order to be effective in using prefixes to name compounds containing two non-metals, these prefixes must be committed to memory:
Example #1-Names to Formulas
Sulfur trioxide
S O1 3
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #2-Names to Formulas
dichlorine heptaoxide
Cl O2 7
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final Formula
Example #3-Names to Formulas
oxygen difluoride
O F1 2
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #4-Names to Formulas
dinitrogen tetraoxide
N O2 4
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final Formula
Example #5-Names to Formulas
phosphorus pentachloride
PCl1 5
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #6-Names to Formulas
dinitrogen monoxide
N O2 1
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #7-Names to Formulas
carbon monoxide
C O1 1
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #8-Names to Formulas
sulfur hexafluoride
S F1 6
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final FormulaIf no prefix, then 1 is
implied and not written
Example #10-Names to Formulas
dinitrogen trisulfide
N S2 3
I’m a Binary Compound
2. Write number of atoms
1. Write symbols of elements
Final Formula
Examples #1- Formulas to Names
CCl4
carbon
mono
tetra
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
chlorineideIf first prefix is mono, it is implied and not written
Examples #2- Formulas to Names
XeF3
xenonmono
tri
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
fluorineideIf first prefix is mono, it is implied and not written
Examples #4- Formulas to Names
AsI3
arsenic
mono
tri
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
iodineideIf first prefix is mono, it is implied and not written
Examples #6- Formulas to Names
IF5
iodinemono
penta
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
fluorineideIf first prefix is mono, it is implied and not written
Examples #8- Formulas to Names
N2S5
nitrogen
di penta
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
sulfuride
Examples #9- Formulas to Names
SiCl4
silicon
mono
tetra
I’m a Binary
Compound
2. Write number of atoms
1. Write names of elements
Final Name
chlorineideIf first prefix is mono, it is implied and not written
Practice Problem #1ClF3
Choose the correct name for the compound
1. carbon iodine trifluoride
2. chlorine trifluorine
3. chlorine trifluoride
4. chlorine tetrafluoride
5. none of the abovenext
problemPrefixesElement List
Practice Problem #2arsenic pentabromide
Choose the correct formula for the compound
1. AsBr5
2. ArBr5
3. AsBr7
4. As5Br5. none of the above
next problem
PrefixesElement List
Practice Problem #3N2O3
Choose the correct name for the compound
1. nitrogen trioxide
2. dinitride trioxide
3. dinitrogen trioxygen
4. dinitrogen trioxide
5. none of the abovenext
problemPrefixes
Practice Problem #6dichlorine monoxide
Choose the correct formula for the compound
1. ClO
2. Cl2O
3. ClO2
4. Cl2O2
5. none of the above
next problem
Prefixes
Practice Problem #8Tetraphosphorus decaoxide
Choose the correct formula for the compound
1. P4O10
2. P6O10
3. 4PO10
4. P2O5
5. none of the above
next problem
Prefixes
Practice Problem #11NO
Choose the correct name for the compound
1. mononitrogen monoxide
2. nitrogen monoxygen
3. mononitrogen oxide
4. nitride monoxide
5. none of the abovenext
problem
This is nitrogen monoxide
Practice Problem #16silicon tetrabromide
Choose the correct formula for the compound
1. SBr4
2. ScBr4
3. SiB4
4. SiBr6
5. none of the above
next problem
PrefixesElement List
The correct formula is SiBr4
Practice Problem #17S4N4
Choose the correct name for the compound
1 tetrasulfur tetranitride
2. tetrasulfur nitride
3. trisulfur trinitride
4. tetrasulfur tetranitrogen
5. none of the abovenext
problemPrefixes
Practice Problem #19BF3
Choose the correct name for the compound
1. monoboron trifluoride
2. boron trifluorine
3. boron trifluoride
4. bromine trifluoride
5. none of the above
Element List
Practice Problem #20tetraphosphorus decasulfide
Choose the correct formula for the compound
1. P6S9
2. P4S9
3. P4Si10
4. Ph4S10
5. none of the above
next problem
PrefixesElement ListThe correct formula is P4S10
Si
As
Al
Ge
Sb
Po
B
Te
At
HH
dual properties
Element List1 Actinium Ac
2 Aluminum Al
4 Argon Ar
5 Arsenic As
6 Astatine At
7 Barium Ba
9 Beryllium Be
10 Bismuth Bi
12 Boron B
13 Bromine Br
14 Cadmium Cd
15 Calcium Ca
17 Carbon C
18 Cerium Ce
19 Cesium Cs
20 Chlorine Cl
21 Chromium Cr
22 Cobalt Co
23 Copper Cu
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24 Fluorine F
• Francium Fr
24 Gallium Ga
• Germanium Ge
• Gold Au
• Helium He
• Hygrogen H
• Indium In
• Iodine I
• Iridium Ir
• Iron Fe
• Krypton Kr
47 Lanthanum La
48 Lead Pb
49 Lithium Li
50 Magnesium Mg
51 Manganese Mn
52 Mercury Hg
53 Molybddenum Mo
54 Neon Ne
55 Nickel Ni
56 Niobium Nb
57 Nitrogen N
58 Osmium Os
59 Oxygen O
60 Palladium Pd
61 Phosphorus P
62 Platinum Pt
70 Plutonium Pu
71 Polonium Po
72 Potassium K
73 Radium Ra
74 Radon Rn
Prefixes
mono- 1 hepta- 7 di- 2 octa- 8 tri- 3 nona- 9 tetra- 4 deca- 10 penta- 5 undeca- 11 hexa- 6dodeca- 12
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