Palladium Crystallizes in a Face-Centered Cubic Unit Cell

Multiple Choice

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm³ at 27°C. What is the atomic radius of Pd?

A) 138 pm
B) 1.95 × 10^-8 nm
C) 1.95 × 10^-8 cm
D) 154 pm
E) 0.109 nm