Question

Deduce the molecular formulae of the compound obtained from the following pairs of elements by the cross multiplication method.

C (Valency 4) & O (Valency 2)

Answer 1

Step 1: Write the symbols of the radicals.
                           C                       O
Step 2: Write the valency below the respective radical.
                           C                        O
                            4                        2
Step 3: Cross-multiply symbols of radicals with their respective valency.

Step 4: Write down the chemical formula of the compound.

CO₂