1.

In a solid atom M occupies ccp lattice and ((1)/(3)) of tetrahedral voids = 2n Given that ((1)/(3))rd of tetrahedral voids are occupied i.e., ((1)/(3))xx2n are occupied by6 N atoms therefore M:NrArr n:((2)/(3)) 1:((2)/(3))3:2 rArr M_(3)N_(2)

Answer»

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

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


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