Metallic niobium crystallizes in a body-centered cubic lattice, with one Nb atom per lattice point. How many atoms are there per unit cell? atoms If the edge length of the unit cell is found to be 330pm, what is the metallic radius of Nb in pm ? pm A hypothetical metal with an atomic radius of 191pm crystallizes in a simple cubic lattice. Assuming one atom per lattice point, how many atoms are there per unit cell and what is the volume of the unit cell in pm3 and in cm3 ? Atoms per unit cell = Unitcellvolume==pm3cm3