Question

21. Deduce the molecular formulae of the
compound obtained from the following
pairs of elements by the cross multiplication
method c (valency 4) and o (valency 2),
Ca (valency 2) and o (valency 2).
​

Answer 1

Explanation:

ANSWER

C (Valency 4) & Cl (Valency 1):

Step 1 : Write the symbols of the radicals.

           C                Cl

Step 2 : Write the valency below the respective radical.

          C                 Cl

         4                  1

Step 3 : Cross-multiply symbols of radicals with their respective valency.

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

CCl4