answer 3-3 Hafnium (CH0) crystallizes with a BCC structure. It has an atomic mass of 178.49 amu (atomic weight of 178.49 gmole) and a density of 13.31 g/cm3. Given the above data, calculate the following. a. The length of the edge of the BCC unit cell (HINT: Draw the unit cell and place the Hf atoms where they belong.] b. The radius of the Hf atom when bonded into a crystalline solid