Monatomic Ions

d-block Single Ions

+1 / +2
Silver
Gold / Cadmium
Zinc

d-block Multiple Ions with Sn & Pb: USE THE STOCK NUMBER SYSTEM!!!

** Note: Roman numeral indicates + charge of ion.

Copper (I)
Copper (II) / Mercury (I) (Hg2+2)
Mercury (II) / Iron (II)
Iron (III) / Chromium (II)
Chromium (III) / Nickel (II)
Nickel (III)
Cobalt (II)
Cobalt (III) / Manganese (II)
Manganese (IV) / Tin (II)
Tin (IV) / Lead (II)
Lead (IV) / Vanadium (II)
Vanadium (III)
Vanadium (IV)

** Note: Any ions that you need to know which are not listed here can be determined from their location on the periodic table.

Molecular Compounds

Prefixes: Use the following prefixes to indicate the number of atoms in a molecular compound. Never use mono for the first atom.

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

Polyatomic Ions

Positive Polyatomic Ions:

+1 / +2
Ammonium (NH4)+ / Mercury (I) or Dimercury (Hg2)2+

Negative Polyatomic Ions:

-1 / -2 / -3
Acetate (C2H3O2)-
Cyanide (CN)-
Hydroxide (OH)-
Permanganate (MnO4)-
Nitrite (NO2)-
Nitrate (NO3)-
Bicarbonate (HCO3)-
Bisulfite (HSO3)-
Bisulfate (HSO4)-
**The below ions are found for all of the Halogens: F, Cl, Br, I
Perchlorate (ClO4)-
Chlorate (ClO3)-
Chlorite (ClO2)-
Hypochlorite (ClO)- / Chromate (CrO4)-2
Dichromate (Cr2O7)-2
Oxalate (C2O4)-2
Peroxide (O2)-2
Carbonate (CO3)-2
Sulfite (SO3)-2
Sulfate (SO4)-2 / Arsenate (AsO4)-3
Phosphate (PO4)-3

Naming of Acids:

**All acids contain H+1 ions.

The “-ate” ending of an ion turns into an “-ic” ending for the acid.

The “-ite” ending of an ion turns into an “-ous” ending for the acid.

For example: Nitrous acid HNO2
Phosphoric acid H3PO4
**The below acids are found for all of the Halogens: F, Cl, Br, I
Perchloric acid HClO4
Chloric acid HClO3
Chlorous acid HClO2
Hypochlorous acid HClO

Binary Acids: All have a single H+1 ion with a halogen. They name starts with “hydro-,” uses the root name of the halogen, and ends in “-ic.”

For example: Hydrofluoric acid HF
Hydrobromic acid HBr