Write the formulae of the following compounds:
Barium sulphate
To write the formulae of an Ionic compound we follow the given steps:
The formula of Barium sulphate will be :
Name of ions: Barium sulphate
Symbols of ions: Ba
Valency of elements: +2 -2
Formula: ( as +2 and -2 will cancel each other).
Hence, the formula of Barium sulphate is .