Compound Calcium oxide is formed of elements calcium (Ca) and oxygen (O)
Symbols combining power Here subscript number is same Ca2 Formula of calcium oxide is CaO Compounds Hydrogen sulphide is formed of elements
Symbols combining power
Formula is H2S
Compound Carbon monoxide is compound of elements carbon(C) and oxygen (O)
Formula of carbon monoxide is CO
Formula of lead sulphide is PbS
Symbols combining power Pb2 S2
Pb S
Here the subscript numbers is Same.
