Question

ii) Deduce the molecular formulae of the compound obtained from the
following pairs of elements by the cross multiplication.
a) C (Valency4) & Cl (Valency 1) c) C (Valency 4) & 0 (Valency 2)
b) N (Valency3) & H (Valency 1) d) Ca (Valency2) & 0 (Valency2)
​

Answer 1

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.

CCl

4

Answer 2

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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.

CCl

4