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In a solid, atom M occupies ccp lattice ...

In a solid, atom M occupies ccp lattice and 1/3rd of tetrahedral voids are occupied by atom N. Find the formula of solid formed by M and N-

A

`M_(3)N_(2)`

B

`M_(2)N_(3)`

C

`M_(4)N_(3)`

D

`M_(3)N_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
Suppose in the solid number of M atoms = n
So the number of tetrahedral voids = 2n
`therefore` Number of N atoms = `1/3(2n)`
Therefore, ratio of M : M = `n:2/3n=3:2`, i.e., formula of the solid is `M_(3)N_(2)`
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