1. 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.

2. 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.
Diatomic molecules!!
HOFBRICL the clown or “the seven”

3. Diatomic Molecule “di” means “two”
Diatomic molecule contains two atoms
Ex. Fluorine molecule F2

4. NOMENCLATURE
NON-METAL
COMPOUNDS

5. NOMENCLATURE
OF COVALENT
COMPOUNDS
WITH 2 ELEMENTS
BINARY

6. Theory
Compounds are composed of two or more elements chemically combined with a neutral charge.
Binary compounds contain only two types of atoms. The names of all binary compounds always end in “-ide”.
If a binary compound contain two different non-metallic elements, then prefixes are used to indicate the number of atoms.

7. mono- 1 hexa- 6 di- 2 hepta- 7 tri- 3 octa- 8 tetra- 4 nona- 9
In order to be effective in using prefixes to name compounds containing two non-metals, these prefixes must be committed to memory:
mono- 1 hexa- 6
di hepta- 7
tri octa- 8
tetra nona- 9
penta- 5 deca- 10

8. When naming compounds using prefixes:
Remember the formulas are written just like the names and the names just like the formulas.
The only difference is that the prefixes in the name are written as subscripts in the formula.
Remember: when there is only one of the first atom a prefix is not used.

9. Example #1-Names to Formulas
I’m a Binary Compound
Sulfur trioxide
1. Write symbols of elements S O 1 3
2. Write number of atoms
If no prefix, then 1 is implied and not written
Final Formula

10. Example #2-Names to Formulas
I’m a Binary Compound
dichlorine heptaoxide
1. Write symbols of elements Cl O 2 7
2. Write number of atoms
Final Formula

11. Example #3-Names to Formulas
I’m a Binary Compound
oxygen difluoride
1. Write symbols of elements O F 1 2
2. Write number of atoms
If no prefix, then 1 is
implied and not written
Final Formula

12. Example #4-Names to Formulas
I’m a Binary Compound
dinitrogen tetraoxide
1. Write symbols of elements N O 2 4
2. Write number of atoms
Final Formula

13. Example #5-Names to Formulas
I’m a Binary Compound
phosphorus pentachloride
1. Write symbols of elements P Cl 5
2. Write number of atoms
If no prefix, then 1 is implied and not written
Final Formula

14. Example #6-Names to Formulas
I’m a Binary Compound
dinitrogen monoxide
1. Write symbols of elements N O 2
2. Write number of atoms
If no prefix, then 1 is implied and not written
Final Formula

15. Example #7-Names to Formulas
I’m a Binary Compound
carbon monoxide
1. Write symbols of elements C O
2. Write number of atoms
If no prefix, then 1 is implied and not written
Final Formula

16. Example #8-Names to Formulas
I’m a Binary Compound
sulfur hexafluoride
1. Write symbols of elements S F 6
2. Write number of atoms
Final Formula

17. Example #10-Names to Formulas
I’m a Binary Compound
dinitrogen trisulfide
1. Write symbols of elements N S 2 3
2. Write number of atoms
Final Formula

18. Examples #1- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
CCl4
mono
carbon
tetra
chlor
ide
ine
If first prefix is mono, it is implied and not written
Final Name

19. Examples #2- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
XeF3
mono
xenon
tri
fluor
ide
If first prefix is mono, it is implied and not written
Final Name

20. Examples #4- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
AsI3
mono
arsenic
tri
iod
ide
If first prefix is mono, it is implied and not written
Final Name

21. Examples #6- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
IF5
iodine
penta
fluor
ide
Final Name

22. Examples #8- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
N2S5 di
nitrogen
penta
sulf
ide
Final Name

23. Examples #9- Formulas to Names
1. Write names of elements
2. Write number of atoms
I’m a Binary Compound
SiCl4
silicon
tetra
chlor
ide
Final Name

24. Practice Problem #1 No, "Cl" is not carbon & iodine, see element list
ClF3
Choose the correct name for the compound
1. carbon iodine trifluoride
No, "Cl" is not carbon & iodine, see element list
2. chlorine trifluorine
No, all binary compounds end with "ide"
3. chlorine trifluoride
Very good, click arrow to continue
4. chlorine tetrafluoride
No, you need to review prefixes
5. none of the above
No, there is a correct answer
next problem
Element List
Prefixes

25. Practice Problem #2 Very good, click arrow to continue
arsenic pentabromide
Choose the correct formula for the compound
1. AsBr5
Very good, click arrow to continue
2. ArBr5
No, "Ar" is not correct, see element list
3. AsBr7
No, you need to review prefixes
4. As5Br
No, the subscript is with the wrong element
5. none of the above
No, there is a correct answer
next problem
Element List
Prefixes

26. Practice Problem #3 No, you need to use more prefixes
Choose the correct name for the compound
1. nitrogen trioxide
No, you need to use more prefixes
2. dinitride trioxide
No, only the last element ends with "ide"
3. dinitrogen trioxygen
No, all binary compounds end in "ide"
4. dinitrogen trioxide
Very good, click arrow to continue
5. none of the above
No, there is a correct answer
next problem
Prefixes

27. Practice Problem #6 No, you don't have any subscripts
dichlorine monoxide
Choose the correct formula for the compound
1. ClO
No, you don't have any subscripts
2. Cl2O
Very good, click arrow to continue
3. ClO2
No, you have the wrong subscripts
4. Cl2O2
No, you have the wrong subscripts
5. none of the above
No, there is a correct answer
next problem
Prefixes

28. Tetraphosphorus decaoxide
Practice Problem #8
Tetraphosphorus decaoxide
Choose the correct formula for the compound
1. P4O10
Very good, click arrow to continue
P6O10
No, you have the wrong subscripts
PO10
No, this says that there are 4 molecules
4. P2O5
No, you have the wrong subscripts
5. none of the above
No, there is a correct answer
next problem
Prefixes

29. Practice Problem #11 No, "mono" is used only for the last element
Choose the correct name for the compound
1. mononitrogen monoxide
No, "mono" is used only for the last element
2. nitrogen monoxygen
No, all binary compounds end in "ide"
3. mononitrogen oxide
No, "mono" is used only for the last element
4. nitride monoxide
No, only the last element ends in "ide"
5. none of the above
Very good, click arrow to continue
next problem
This is nitrogen monoxide

30. Practice Problem #16 No, "S" is not correct, see element list
silicon tetrabromide
Choose the correct formula for the compound
1. SBr4
No, "S" is not correct, see element list
ScBr4
No, "Sc" is not correct, see element list
3. SiB4
No, "B" is not correct, see element list
4. SiBr6
No, you need to review prefixes
5. none of the above
Very good, click the arrow to continue
next problem
The correct formula is SiBr4
Element List
Prefixes

31. Practice Problem #17 Very good, click arrow to continue
S4N4
Choose the correct name for the compound
1 tetrasulfur tetranitride
Very good, click arrow to continue
2. tetrasulfur nitride
No, the "nitride" needs a prefix
3. trisulfur trinitride
No, you need to review prefixes
4. tetrasulfur tetranitrogen
No, all binary compounds end in "ide"
5. none of the above
No, there is a correct answer
next problem
Prefixes

32. Practice Problem #19 No, you do not use "mono" for the first element
BF3
Choose the correct name for the compound
1. monoboron trifluoride
No, you do not use "mono" for the first element
2. boron trifluorine
No, all binary compounds end with "ide"
3. boron trifluoride
Very good, click arrow to continue
4. bromine trifluoride
No, "Br" is not correct, see element list
5. none of the above
No, there is a correct answer
Element List

33. tetraphosphorus decasulfide
Practice Problem #20
tetraphosphorus decasulfide
Choose the correct formula for the compound
1. P6S9
No, you need to review prefixes
P4S9
No, you need to review prefixes
3. P4Si10
No, "Si" is not correct, see element list
4. Ph4S10
No, "Ph" is not correct, see element list
5. none of the above
Very good, click arrow to continue
next problem
The correct formula is P4S10
Element List
Prefixes

34. dual properties H H B Al Si Ge As Sb Te Po At

35. Element List return 1 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
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
Lanthanum La
Lead Pb
Lithium Li
Magnesium Mg
Manganese Mn
Mercury Hg
Molybddenum Mo
Neon Ne
Nickel Ni
Niobium Nb
Nitrogen N
Osmium Os
Oxygen O
Palladium Pd
Phosphorus P
Platinum Pt
Plutonium Pu
Polonium Po
Potassium K
Radium Ra
Radon Rn
return

36. Prefixes mono- 1 hexa- 6 di- 2 hepta- 7 tri- 3 octa- 8
tetra- 4 nona- 9
penta- 5 deca- 10
return