
The valencies (or charge) of some ions are given below:
Ion
Valency (charge)
Ion
Valency (charge)
Sodium ion
Bromide ion
Ammonium ion
Hydroxide ion
Calcium ion
Sulphate ion
Lead ion
Phosphate ion
Using the information, write down the formula of the following compound:
Sodium phosphate

Important Questions on Atoms and Molecules
The valencies (or charge) of some of the ions are given below:
Ion Valency(Charge) Ion Valency(Charge)
Sodium ion 1+ Bromide ion 1-
Ammonium ion 1+ Hydroxide ion 1-
Calcium ion 2+ Sulphate ion 2-
Lead ion 2+ Phosphate ion 3-
Using the information, write down the formula of the Ammonium sulphate compound.

The valencies (or charge) of some of the ions are given below:
Ion Valency(Charge) Ion Valency(Charge)
Sodium ion 1+ Bromide ion 1-
Ammonium ion 1+ Hydroxide ion 1-
Calcium ion 2+ Sulphate ion 2-
Lead ion 2+ Phosphate ion 3-
Using the information, write down the formula of the Calcium hydroxide compound.

The valencies (or charge) of some ions are given below:
Ion | Valency (charge) | Ion | Valency (charge) | |
Sodium ion | Bromide ion | |||
Ammonium ion | Hydroxide ion | |||
Calcium ion | Sulphate ion | |||
Lead ion | Phosphate ion |
Using the information, write down the formula for Lead bromide.


The valencies(or charges) of some of the ions are given below:
Ion Valency(charge) Ion Valency(charge)
Sodium ion 1+ Nitrate ion 1-
Copper ion 2+ Sulphide ion 2-
Using this information, write down the formula of sodium sulphide.

The valencies(or charges) of some of the ions are given below:
Ion Valency(charge) Ion Valency(charge)
Sodium ion 1+ Nitrate ion 1-
Copper ion 2+ Sulphide ion 2-
Using this information, write down the formula of copper nitrate.


