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If you are incredibly confused, perhaps you could visit http://chemistry.about.com/od/nomenclature/a/nomenclature-ionic-compounds.htm Note: the subscript is normal (shown as a normal letter), so make a space between the charge and the subscript, unless it's only +1 (+) or 1- (-) For instance: peroxide is O2 2-, not O22-, to avoid confusion. However, ammonium is NH4+ because it's a +1 charge.

NH4+

ammonium

Cs+

cesium

Cu+

copper (I); cuprous

H+

hydrogen

Li+

lithium

K+

potassium

Rb+

rubidium

Ag+

silver

Na+

sodium

Ba 2+

barium

Be 2+

beryllium

Cd 2+

cadmium

Ca 2+

calcium

Co 2+

cobalt (II); cobaltous

Cu 2+

copper (II); cupric

Fe 2+

iron (II); ferrous

Pb 2+

lead (II); plumbous

Mg 2+

magnesium

Mn 2+

manganese (II); manganous

Hg2 2+

mercury (I); mercurous

Hg 2+

mercury (II); mercuric

Ni 2+

nickel (II); nickelous

Sr 2+

strontium

Sn 2+

tin (II), stannous

Zn 2+

zinc

Al 3+

aluminum

Bi 3+

bismuth

Cr 3+

chromium (III); chromic

Fe 3+

iron (III); ferric

Sn 4+

tin (IV); stannic

C2H3O2-

acetate

Br-

bromide

Cl-

chloride

ClO-

hypochlorite

ClO2-

chlorite

ClO3-

chlorate

ClO4-

perchlorate

CN-

cyanide

H2PO4-

dihydrogen phosphate

F-

fluoride

H-

hydride

HCO3-

hydrogen carbonate, bicarbonate

HSO4-

hydrogen sulfate, bisulfate

HSO3-

hydrogen sulfite; bisulfite

OH-

hydroxide

NO3-

nitrate

NO2-

nitrite

MnO4-

permanganate

CO3 2-

carbonate

C2O4 2-

oxalate

CrO4 2-

chromate

Cr2O7 2-

dichromate

HPO4 2-

monohydrogen phosphate

O 2-

oxide

O2 2-

peroxide

SO4 2-

sulfate

S 2-

sulfide

SO3 2-

sulfite

S2O3 2-

thiosulfate

AsO4 3-

arsenate

N 3-

nitride

PO4 3-

phosphate

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