Class 12 Chemistry - Chapter The Solid State NCERT Solutions | A compound is formed by two elements M a

Welcome to the NCERT Solutions for Class 12th Chemistry - Chapter The Solid State. This page offers a step-by-step solution to the specific question from Exercise 1, Question 16: a compound is formed by two elements m and n the....
Question 16

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 ccp lattice is formed by the atoms of the element N.

Here, the number of tetrahedral voids generated is equal to twice the number of atoms of the element N.

According to the question, the atoms of element M occupy 1/3rd of the tetrahedral voids.

Therefore, the number of atoms of M is equal to 2x1/3 = 2/3rd of the number of atoms of N.

Therefore, ratio of the number of atoms of M to that of N is M: N =2/3 :1 = 2 : 3

Thus, the formula of the compound is M2N3.

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