Phosphorus

P₄

Sulphur

S₈

Ammonia

NH₃

Hydrogen sulphide

H₂S

Acids with formulae

Hydrochloric acid - HCl

Sulphuric acid - H2SO₄

Nitric acid - HNO₃

Phosphoric acid - H₃PO₄

Barium ion

Ba²⁺

Silver (I) ion

Ag⁺

Zinc(II)

Zn²⁺

Ammonium ion

NH₄ ⁺

Nitrate ion

NO₃ ⁺

Sulphate ion

So₄ ^2-

Carbonate ion

CO₃ ^2-

Hydrogencarbonate ion

HCO₃ ^-

Hydride ion

H^-

Phosphate ion

PO₄ ^3-