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Gold (atoic radius = 0.144 nm) crystalli...

Gold (atoic radius = 0.144 nm) crystallizes in a facelcentred unit cell. What is the length of a side of the cell?

Text Solution

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For `f.c.c.` structure,
radius of atom`=("Edge length")/(2sqrt(2))`
`:.` Edge length `=2sqrt920xxr=2sqrt(2)xx0.144`
`=0.407nm`
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