Question

deduce the molecular formula of the compound obtained from the following pairs of elements by the cross multiplication method and explain the method stepwise
1)C (Valency 4) & Cl (Valency 1)
2)Fe (Valency 2) & S (Valency 2)​

Answer 1

Answer:

1) 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

2)   Ca (Valency 2) & O (Valency 2)

Step 1 : Write the symbols of the radicals.

         Ca          O

Step 2 : Write the valency below the respective radical.

        Ca         O

        2            2

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

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

CaO

 

Explanation:

Answer 2

Answer:

The first part of this review ( sections 1−4) sets the context ... The valence of ion or atom i is used to define the ... It can be derived(2) from the equal valence principle in ...