Question

In a solid atoms 'M' are present at face center and atoms 'N' are present at each corner of cubic unit cell. If an atom from one corner is removed then formula of the resulting crystal is​

Answer 1

Answer:

formula of the resulting crystal is M24N7

Explanation:

In cubic unit cell, there are eight corner and six faces and each corner atom share with eight cubes and each face centre atom share with two cubes

Since Solid atm M is present at face centre. So,

Number of solid atom M present in a crystal = 1/2 × 6

= 3

Since Solid atm N is present at corner and one atom is removed from a corner. So,

Number of solid atom N present in a crystal = 1/8 × 7

= 7/8

Formula of crystal is M3 N7/8 i.e M24N7 ( generally in molecular formula, the number of atom is represented in nearest integer not in fraction.