Metals
Ca
Calcium
H2
Hydrogen
CaO
Calcium oxide
CO2
carbon dioxide
CO32-
carbonate
Na
Sodium
B
Boron
K2CO3
potassium carbonate
NO
nitrogen monoxide
NO3-
nitrate
Fe
Iron
Si
Silicon
FeO
Iron (II) oxide
P2O5
diphosphorus pentoxide
NO2-
nitrite
Hg
Mercury
Xenon
Na2HPO4
Sodium hydrogen phosphate
XeF6
xenon hexafluoride
NH4+
ammonium
Mn
Manganese
As
Arsenic
Hg2Br2
Mercury (I) bromide
Cl2O7
dichlorine heptaoxide
C2H3O2-
acetate