Copper crystallizes into a fcc lattice with edge length3.61 xx 10^(-8) cm, show that the calculated density is in agrrement with its measured value of8.92 " g cm"^(-3) .

Copper crystallizes into a fcc lattice with edge length3.61 xx 10^(-8)

1.	Copper crystallizes into a fcc lattice with edge length3.61 xx 10^(-8) cm, show that the calculated density is in agrrement with its measured value of8.92 " g cm"^(-3) .
Answer» Solution : ` p = ( Z xxM)/(a^(3) xx V_(0))` For FCC lattice of copper , Z =4Atomic mass of copper, M = ` 63.5 " G mol"^(-1)` ` p = (4 xx 63.5 " g mol"^(-1))/((3.61 xx 10^(-8) "cm")^(3) xx ( 6.022 xx 10^(23)"mol"^(-1))) =8.97 " g cm"^(-3)` which is in CLOSE agreement with the MEASURED with the measured value .