1.

(a) calculate packing efficiency in simple cubic lattice. (b) An element having atomic mass 107.9 u has FCC lattice . The edge length of its unit cell is 408.6 pm calculate density of the unit cell.Given, NA=6.022xx10^23 mol-1].

Answer»

SOLUTION :(B) `GIVEN, NA=6.002xx1023 mol-1`
`(4xx107.9xx10^3)/((408.6xx10^(-12))xx6.022xx10^22`


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