Q. 164.3( 31 Votes )

A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy 1/3rd of tetrahedral voids. What is the formula of the compound?

Answer :

The formula can be determined by using the following method

Let the number of atoms of the element N = n


Number of tetravalent voids = 2n


It is given that the atoms of element M occupy 1/3 of the tetrahedral voids.


So that the number of atoms of M = (1/3) × 2n


Ratio of the number of atoms of M and N


M:N =2n/3:n


Multiplying the 3 and divide by n we get


M:N = 2:3


Hence, the formula of the compound is M2N3 .


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