Metals
Nonmetals
Ionic Compounds
Molecular Compounds
Polyatomic Ions
100

Ca

Calcium

100

H2

Hydrogen

100

CaO

Calcium oxide

100

CO2

carbon dioxide

100

CO32-

carbonate

200

Na

Sodium

200

B

Boron

200

K2CO3

potassium carbonate

200

NO

nitrogen monoxide

200

NO3-

nitrate

300

Fe

Iron

300

Si

Silicon

300

FeO

Iron (II) oxide

300

P2O5

diphosphorus pentoxide

300

NO2-

nitrite

400

Hg

Mercury

400
Xe

Xenon

400

Na2HPO4

Sodium hydrogen phosphate

400

XeF6

xenon hexafluoride

400

NH4+

ammonium

500

Mn

Manganese

500

As

Arsenic

500

Hg2Br2

Mercury (I) bromide

500

Cl2O7

dichlorine heptaoxide


500

C2H3O2-

acetate