In a fcc unit cell of 'A' atom ( At wt = 150 ) having side length 10 A ˚ , the number of atom per unit cell is Z , number of next nearest neighbour is X \& packing efficiency is y % find val

Question

In a fcc unit cell of 'A' atom ( At wt = 150 ) having side length 10 A ˚ , the number of atom per unit cell is Z , number of next nearest neighbour is X \& packing efficiency is y % find value of ( x 2 + 1 ) yz ​

TestHub · Accepted Answer

For an FCC unit cell: Z (atoms per unit cell) = 4. X (next nearest neighbors) = 6. y (packing efficiency) = 74%. Value = ( x 2 + 1 ) yz ​ = ( 6 2 + 1 ) 74 × 4 ​ = 37 296 ​ = 8 .

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