diatomic & polyatomic molecules

What are the elements naturally exist as molecules?

diatomic: H2, O2, N2, F2, Cl2, Br2, and I2.
polyatomic: P4 and S8

ammonium

NH4 (1+)

hydroxide

OH (1-)

nitrate

NO3 (1-)

sulfate

SO4 (2-)

phosphate

PO4 (3-)

carbonate

CO3 (2-)

acetate

C2H3O2 (1-)

nitrite

NO2 (1-)

sulfite

SO3 (2-)

hydrogen sulfate

HSO4 (-1)

cyanide

CN (1-)

hydrogen phosphate

HPO4 (2-)

dihydrogen phosphate

H2PO4 (2-)

hydrogen carbonate

HCO3 (1-)

hypochlorite

ClO (1-)

chlorite

ClO2 (1-)

chlorate

ClO3 (1-)

perchlorate

ClO4 (1-)

permanganate

MnO4 (1-)

dichromate

Cr2O7 (2-)

chromate

CrO4 (2-)

peroxide

O2 (2-)