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(a) calculate packing efficiency in simp...

(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]`.

Text Solution

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