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Gold (atomic radius = 0.150nm) crystalli...

Gold (atomic radius = 0.150nm) crystallises in a face centred unit cell. What is the length of the side of the cell ?

Text Solution

Verified by Experts

The correct Answer is:
0.407 nm
For a face centred unit cell.
`r= (a)/(2sqrt2)or a =2sqrt2r`
`a=2xx1.4142xx(0.144"nm")=0.407nm.`
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