1
Phosphorus
P4
2
Sulphur
S8
3
Ammonia
NH3
4
Hydrogen sulphide
H2S
5
Acids with formulae
Hydrochloric acid - HCl
Sulphuric acid - H2SO4
Nitric acid - HNO3
Phosphoric acid - H3PO4
6
Barium ion
Ba2+
7
Silver (I) ion
Ag+
8
Zinc(II)
Zn2+
9
Ammonium ion
NH4 +
10
Nitrate ion
NO3 +
11
Sulphate ion
So4 2-
12
Carbonate ion
CO3 2-
13
Hydrogencarbonate ion
HCO3 -
14
Hydride ion
H-
15
Phosphate ion
PO4 3-