1.

Atoms of an element A occupy(2)/(3)tetrahedral volds in the hcp, formed by the elements, 'B' . The formula of compound is

Answer»

`A_(2)B_(3)`
`A_(2)B`
`AB_(2)`
`A_(4)B_(3)`

SOLUTION :No . Ofoctahedral voids FORMED`=2xx`No . Of ATOMS of B .
Only`(2)/(3)`rdof these are occupied by atoms of A
`:.`No .of atoms A : No. of atoms of B
`=2xx(2)/(3):1=4:3`
`:.`FORMULA is `A_(4)B_(3)`


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