Question

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

N (Valency 3) & H (Valency 1)

Answer 1

N (Valency 3) & H (Valency 1)
Step 1: Write the symbols of the radicals.
                           N                      H
Step 2: Write the valency below the respective radical.
                           N                      H
                            3                      1
Step 3: Cross-multiply symbols of radicals with their respective valency.

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

NH₃