Monatomic Cations and Anions
Cations
Symbol
Symbol
Name
H+
hydrogen ion
Hg22+
Li+
lithium ion
Hg2+
Na+
sodium ion
Fe2+
K+
potassium ion
Fe3+
Rb+
rubidium ion
Pb2+
Cs+
cesium ion
lead(IV)
plumbic
Be2+
Pb4+
Sn2+
Mg2+
magnesium ion
Sn4+
Ca2+
calcium ion
cobalt(II)
cobaltous
Sr2+
Co2+
Co3+
Ba2+
barium ion
Cr2+
Ag+
silver ion
Cr3+
Ra2+
radium ion
Al3+
Ni2+
nickel ion
Au+
Zn2+
zinc ion
Au3+
Cu+
copper(I)
cuprous
Cu2+
Anion
Name
mercury(I)
mercurous
Symbol
Name
H-
hydride
mercury(II) mercuric
F-
fluoride
Cl-
chloride
Br-
bromide
I-
iodide
O2-
oxide
S2-
sulfide
Se2-
selenide
Te2-
telluride
*
*
*
*
N3-
nitride
*
*
P3-
phosphide
As3-
arsenide
*
*
iron(II)
ferrous
iron(III)
ferric
lead(II)
plumbous
beryllium ion
tin(II)
stannous
tin(IV)
stannic
strontium ion
cobalt(III)
cobaltic
chromium(II)
chromous
chromium(III)
chromic
aluminum ion
gold(I)
aurous
gold(III)
auric
copper(II)
cupric
Polyatomic Anions
Anions
Symbol
NO3NO2CrO42Cr2O72CNMnO4OHO22NH2-
Name
nitrate
nitrite
chromate
dichromate
cyanide
permanganate
hydroxide
peroxide
amide
Symbol
ClO4ClO3ClO2ClOIO4IO3IOBrO3BrO-
Name
perchlorate
chlorate
chlorite
hypochlorite
periodate
iodate
hypoiodite
bromate
hypobromite
Symbol
SO42HSO4SO32HSO3C2O42HC2O4 PO43HPO42PO33-
Name
sulfate
hydrogen sulfate
sulfite
hydrogen sulfite
oxalate
hydrogen oxalate
phosphate
hydrogen
phosphate
phosphite
CO32-
carbonate
HCO3-
hydrogen carbonate
H2PO4-
dihydrogen
phosphate