Naming Compounds
Ionic and Covalent
First thing first…



Determine if the compound is Ionic
or Covalent.
Ionic = Metal + Nonmetal
Covalent = Nonmetal + Nonmetal
Metal vs Nonmetal
Nonmetals
Metals
Metal vs Nonmetal
Nonmetals
Metals
Metal vs Nonmetal
Metalloids
Metals
Nonmetals
Ionic: Binary (2 elements)


Positive ion + Negative ion
Change ending to “ide”
Ionic Naming


Subscripts have no affect on the
name.
Example:


NaCl = Sodium Chloride
CaCl2 = Calcium Chloride
Transition Metals

Roman Numerals are used to
indicate the CHARGE of transition
metals.
1 I
2
3
4
5
6
7
8
9
10
II
III
IV
V
VI
VII
VIII
IX
X
Transition Metal Example
Charge of Nickel (+3)
Nickel (III) Sulfide
Charge of Sulfur (-2)
+3
-2
Ni2S3
Polyatomic ions

An ion containing more than one
atom.
Polyatomic ion Families
Common Polyatomic Ions











NH4+
CNOHNO3NO2SO4-2
SO3-2
PO4-3
ClO3MnO4CO3-
ammonium
cyanide
hydroxide
nitrate
nitrite
sulfate
sulfite
phosphate
chlorate
permanganate
carbonate
Memorizing Polyatomics
-1
-1
-2
-2
3
4
3
-3
OH NO SO CO PO
hydroxide
nitrate
sulfate
carbonate
4
phosphate
Using polyatomics
+2
+3
Magnesium Phosphate
Mg
PO4
Mg3(PO4)2
What to remember about ionic
compounds


End in “ide”
Transition metals


Roman Numeral indicates charge
Polyatomic ions
Try a few Ionic Compounds

K3N
__________________

CuOH
__________________

FePO4
__________________

MgO
__________________
Try it the other way

Vanadium (III) sulfide

Manganese (II) phosphate _______

Sodium oxide

Lithium Fluroide
_______
_______
_______
Covalent Naming

Know your prefixes
1
2
3
4
5
6
7
8
9
10
Mono
Di
Tri
Tetra
Penta
Hexa
Hepta
Octa
Nona
Deca
Use the prefixes


The prefix indicates the number of
atoms of the element
Change the ending of the second
compound to “ide”
Ends in “ide”
diphosphorous trioxide
2 Phosphorous atoms
3 Oxygen atoms
Use the prefixes

If the first element is singular do
not use the mono prefix.
Ends in “ide”
Carbon dioxide
1 Carbon atoms
2 Oxygen atoms
Use the prefixes

If the second element is singular
you must use the mono prefix.
Ends in “ide”
Carbon monoxide
1 Carbon atoms
1 Oxygen atom
Try a few Covalent Compounds

NF3
___________________________

Si2Br6
___________________________

N2O3
___________________________

ClO2
___________________________

CF4
___________________________
Try it the other way now

Hexaboron Silicide

Dihydrogen monoxide
______________

Iodine pentafluoride
______________

Phorsphorous triiodide
______________

Carbon tetrachloride
______________
______________
YAY!
You are now an expert at naming
compounds 