An unknown metal crystallized in the hexagonal closest-packed structure and has a density of 12.2 g/cm3. Its atomic radius is 1.34Å. There are 4 atoms per unit cell. What is the metal?

An unknown metal crystallized in the hexagonal closest-packed structure and has a density of 12.2 g/cm3. Its atomic radius is 1.34Å. There are 4 atoms per unit cell. What is the metal?

An unknown metal crystallized in the hexagonal closest-packed structure and has a density of 12.2 g/cm3. Its atomic radius is 1.34Å. There are 4 atoms per unit cell. What is the metal?



a. Mg
b. Ba
c. Fe
d. Ru
e. Au



Answer: D