X- ray diffraction studies show that copper crystallizes in an fcc unit cell with cell edge of3.608 xx 10^(-8)cm. In a separate experiment, copper is deteremined to have a density of 8.92 g/cm^(3)calculate the atomic mass of copper.

X- ray diffraction studies show that copper crystallizes in an fcc uni

1.	X- ray diffraction studies show that copper crystallizes in an fcc unit cell with cell edge of3.608 xx 10^(-8)cm. In a separate experiment, copper is deteremined to have a density of 8.92 g/cm^(3)calculate the atomic mass of copper.
Answer» Solution :` P = (Z xx M)/(a^(3) xx N_(0))orM = ( p xx a^(3) xx N_(0))/Z` for fcc LATTICE , Z= 4. Hence , ` M = (( 8.92 " g cm" ^(-3))( 3.608 xx 10^(-8) cm) ^(3)( 6.022 xx 10^(23)" atoms mol"^(-1))) = 63.1" g mol ^(-1)` Atomic MASS of copper = `63.1 "g mol"^(-1)`