A solid is formed and it has three types of atoms X, Y and Z, X forms a fcc lattice with Y atoms occupying all tetrahedral voids and Z atoms occupying half of octahedral voids. The formula of solid is :-

Options

A. `X_(4)YZ_(2)`
B. `X_(4)Y_(2)Z`
C. `XY_(2)Z_(4)`
D. `X_(2)Y_(4)Z`

Answer

D

Explanation

`x=4`
y=8
`z=(1)/(2)xx4=2`
`x_(4),y_(8)z_(2)=x_(2)y_(4)z`