1.

A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy (1/3)^(rd) of tetrahedral voids. What is the formula of the compound ?

Answer»

Solution :Total no. of N-ATOMS per unit cell = 4
`therefore` Total no. of TETRAHEDRAL VOIDS = 8 
Total number of voids occupied `= 8 xx 1/3`
by atoms M
`therefore` Total no. of M-atom = `8/3`
`therefore `Ratio of M and N atoms per unit cell = `8/3 : 4`
`therefore` Formula of COMPOUND = `M_2N_3`


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