47.
Barium metal crystallizes in a body centered cubin lattice with barium atoms only at the lattice points. If the density of barium metal is 3.50g/cm^3. What is length of unit cell ?
A:
3.19 x 10 ^-8 cm
B:
4.02 x 10^-8 cm
C:
5.07 x 10^-8cm
D:
6.39 x 10^-8 cm
The answer is:
C
