Answer
1.67 x 10^-8 cm
Work Step by Step
208.982 g/mol divided by 6.022 x 10^23 atoms/mol = 3.470309 x 10^-22 g
3.470309 x 10^-22 g divided by 9.323 g/cm^3 = 3.7223 x 10^-23 cm3
What is the edge length of the unit cell?
cube root of (3.7223 x 10^-23 cm3) = 3.3389 x 10^-8 cm
The atoms touch along the edge length, so the edge length is twice the atomic radius, which then equals 1.67 x 10^-8 cm
