1.

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

Answer»

`MN`
`M_(3)N`
`MN_(3)`
`M_(3)N_(2)`

Solution :Hint : If the total number of M atoms in n, then then number of tetrahedral voids `=2n`
Given that `((1)/(3))RD` of tetrahedral voids are OCCUPIED i.e., `((1)/(3))xx2n` are occupied by N atom.
`therefore M:N rArr M_(3)N_(2)`


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