1.

A forms hcp lattice and B are occupying (1/3)^(rd) of tetrahedral voids. The formula of compound is …….

Answer»

`AB`
`A_3B_2`
`A_2B_3`
`AB_4`

Solution :Total number of A-atom = 6
Total number of tetrahedral VOIDS = 12
Total number of B-atoms `= 12xx 1/3 = 4`
RATIO of A-atoms to B-atoms
`= A:B = 6:4 = 3:2`


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