Question

what is the molecular formula of carbon dioxide by criss cross method

Answer 1

Answer:

The chemical symbol for oxygen is O, but pure oxygen exists as diatomic (“two-atom”) molecules, represented by the chemical formula O2. A molecule of the compound carbon dioxide consists of one atom of carbon and two atoms of oxygen, so carbon dioxide is represented by the chemical formula CO2.

Answer 2

Answer:

The valency of carbon is 4- and the valency of oxygen is 2-.

By criss-cross method:

4- 2-

C O

The charge of the valency will not be needed for this. The valency will criss-cross and give us C2O4.

This, when divided by 2, gives us CO2.

Hope I helped :)