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Copper crystallizer into an fcc lattice ...

Copper crystallizer into an fcc lattice with edge length `3.61 xx 10^(8) cm`, Show that the calculated density in in agreement with its measured value of `8.92 g cm^(3)`.

Text Solution

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`rho = (zxxM)/(a^(3)xxN_(0))` For fcc lattice of copper z=4 Atomic mass of copper, M=63.5 g `"mol"^(-1)`
`:. (4xx63.5"gmol"^(-1))/((3.61xx10^(-8)cm)^(3)xx(6.022xx10^(23) "mol"^(-1)))=8.97 "gcm"^(-3)`
which is in close agreement with the measured value.
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