Copper has a face`-` centred cubic structure with a unit`-` cell edge length of `3.61Å`. What is the size of the largest atom which could fit into the intersectices of the copper lattice without distorting if ?

Copper has a face`-` centred cubic structure with a unit`-` cell edge

1.	Copper has a face`-` centred cubic structure with a unit`-` cell edge length of `3.61Å`. What is the size of the largest atom which could fit into the intersectices of the copper lattice without distorting if ?
Answer» Correct Answer - `0.53Å ` `r_("octahedral") = 0.414 R` For FCC `4R = sqrt2a` `R = (sqrt2a)/(4)` `r = (0.414 sqrt2 a)/(4) = (0.414 sqrt2 xx 3.61)/(4) = 0.53Å `

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Copper has a face`-` centred cubic structure with a unit`-` cell edge length of `3.61Å`. What is the size of the largest atom which could fit into the intersectices of the copper lattice without distorting if ?

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