If the unit length of the unit cell is 5 `Å ` the smallest distance is `A^(@)` between two neigghbouring metal atoms is a fcc is
If the unit length of the unit cell is 5 `Å ` the smallest distance is `A^(@)` between two neigghbouring metal atoms is a fcc is
A. `2.5`
B. `5.00`
C. `7.07`
D. `3.535`
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Correct Answer - D
Unit cell length a `=5A^(@)`
Nearest neighbouring distance
`=(1)/(2)sqrt(2xx5^(2))=(sqrt(50))/(2)=(7.07)/(2)`
`=3.535A^(@)`
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