Density is the ratio of the mass of crystal to its volume. For a perfect FCC metallic crystal, the mass of a unit cell is 4 times M0. M0 is:

Density is the ratio of the mass of crystal to its volume. For a perfe

1.	Density is the ratio of the mass of crystal to its volume. For a perfect FCC metallic crystal, the mass of a unit cell is 4 times M0. M0 is:
A.	specific mass
B.	molar mass
C.	atomic mass
D.	none of the mentioned
Answer» D. none of the mentioned