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.

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.

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”

Diatomic Molecule• “di” means “two”• Diatomic molecule contains two atoms

– Ex. Fluorine molecule F2

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

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


dichlorine heptaoxide

Cl O2 7




Final Formula


oxygen difluoride

O F1 2




Final FormulaIf no prefix, then 1 is

implied and not written


dinitrogen tetraoxide

N O2 4




Final Formula


phosphorus pentachloride

PCl5





and not written


dinitrogen monoxide

N O2





and not written


carbon monoxide

C O





and not written


sulfur hexafluoride

S F6




Final Formula


dinitrogen trisulfide

N S2 3




Final Formula

Examples #1- Formulas to Names

CCl4

carbon

mono

tetra



1. Write names of elements

Final Name

chlorineideIf first prefix is mono, it is implied and

not written


XeF3

xenonmono

tri




Final Name

fluorideIf first prefix is mono, it is implied and

not written


AsI3

arsenic

mono

tri




Final Name

iodideIf first prefix is mono, it is implied and

not written


IF5

iodine penta




Final Name

fluoride


N2S5

nitrogen

di penta




Final Name

sulfide


SiCl4

silicon

tetra




Final Name

chloride

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 above

next problemPrefixesElement List

Practice Problem #2arsenic

pentabromide

Choose the correct formula for the compound

1. AsBr5

2. ArBr5

3. AsBr7

4. As5Br



Practice Problem #3N2O3


1. nitrogen trioxide

2. dinitride trioxide

3. dinitrogen trioxygen

4. dinitrogen trioxide


next problemPrefixes

Practice Problem #6dichlorine monoxide


1. ClO

2. Cl2O

3. ClO2

4. Cl2O2



Practice Problem #8Tetraphosphorus

decaoxide


1. P4O10

2. P6O10

3. 4PO10

4. P2O5



Practice Problem #11NO


1. mononitrogen monoxide

2. nitrogen monoxygen

3. mononitrogen oxide

4. nitride monoxide


next problem

This is nitrogen monoxide

Practice Problem #16silicon tetrabromide


1. SBr4

2. ScBr4

3. SiB4

4. SiBr6



The correct formula is SiBr4

Practice Problem #17S4N4


1 tetrasulfur tetranitride

2. tetrasulfur nitride

3. trisulfur trinitride

4. tetrasulfur tetranitrogen



Practice Problem #19BF3


1. monoboron trifluoride

2. boron trifluorine

3. boron trifluoride

4. bromine trifluoride


Element List

Practice Problem #20tetraphosphorus

decasulfide


1. P6S9

2. P4S9

3. P4Si10

4. Ph4S10


next problemPrefixesElement 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

return

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 hexa- 6

di- 2 hepta- 7 tri- 3 octa- 8 tetra- 4 nona- 9 penta- 5 deca- 10

return

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.

Documents

binary compound2

binary compounds

number of atoms1

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formulas carbon monoxidecoim

atoms of different elements

correct answerno

types of atoms