Question 1
Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm
3 at 27°C. Calculate the atomic radius of Pd.
◦ 154 pm
◦ 138 pm
◦ 1.95 × 10
–8 nm
◦ 0.109 nm
◦ 1.95 × 10
–8 cm
Question 2
Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm
3. What is the radius of the platinum atom?
◦ 69 pm
◦ 98 pm
◦ 139 pm
◦ 196 pm
◦ 277 pm