Chemistry, asked by hsilodiya6815, 1 year ago

fcc lattice, what is the fraction of unit cell occupied by coper atom?

Answers

Answered by madhupinkyin
0

In FCC the relation between radius and edge length is given as


4∗R=a∗(√2)4∗R=a∗(√2) // R is the radius of the atom


or a=2√2∗Ra=2√2∗R // a is edge length of unit cell


Edge uncovered can be calculated as : a−2∗R= 0.83Ra−2∗R= 0.83R


Percentage edge uncovered : (0.83R/a)∗100=29.270.83R/a)∗100=29.27%

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