1.

The fraction of total volume occupied by atoms in a simple cube isA. `(pi)/(2)`B. `(sqrt(3)pi)/(8)`C. `sqrt(2pi)/(6)`D. `(pi)/(6)`

Answer» Correct Answer - d
In simple cubic arrangement no of atoms `= 1`
`a = 2r`
`:.` packing fraction `= ("Volume occupied by one atom")/( "Volume of unit cell")`
`((4)/(3) pi r^(3))/(a^(3)) = ((4)/(3) pi r^(3))/((2r)^(3)) = (pi)/(6)`


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