IONIC
Au, Co, Cr,
Cu, Hg, Mn,
Ni, Pb, Sn
metal
+
nonmetal
Metal has a
fixed charge
1 – mono
2 – di
3 – tri
4 – tetra
5 – penta
Metal does
not have a
fixed charge
6 – hexa
7 – hepta
8 – octa
9 – nona
10 – deca
Name of the
first
element
Roman
numeral of
the charge
of the metal
ion
OXYACID
H and a
polyatomic
ion
H and one
other type
of element
Prefix
(Always use
a prefix)
*Acids Only*
(root of the
element)
+ (⎻ ide)
S ⎻2, SO4 ⎻2, SO3⎻2
Sulfur ⎻
S2O3 ⎻2 :
Thiosulfur ⎻
PO4⎻3, PO3 ⎻2
Phosphor ⎻
(root of
nonmetal)
+
( ⎻ ide)
Hydr ⎻
Carb⎻
CN ⎻1: cyanic
Hydro⎻
root of
element
⎻ic
Acid
Root of
polyatomic
ion name
⎻ate à ⎻ic
NONMETAL Roots
Nitr ⎻
Phosph⎻
Arsen⎻
Espy
BINARY
ACID
(root of
nonmetal)
+
( ⎻ ide)
H 2S
HF
HCl
HBr
HI
Name of the
metal of the
cation
H+
nonmetal(s)
Nonmetals
only
Prefix (if
there is only
one element,
do not use a
prefix)
Name of the
metal of the
cation
ACIDS
MOLECULAR
(covalent)
Ox⎻
Sulf ⎻
Selen ⎻
Tellur⎻
Fluor⎻
Chlor ⎻
Brom⎻
Iod⎻
Astat⎻
*Table applies to both ionic and
molecular compounds
Hypo ⎻
Per ⎻
or
⎻ite à ⎻ous
Acid