Answer to Question #144778 in General Chemistry for Joshua

Question

Lead has an atomic radius of 0.181 nm. If crystallizes with a face-centered cubic unit cell. What is the length of a side of the cell?

Answer 1

For fcc unit cell, a=2√2r.Here, a is the edge length and r is the atomic radius (0.144 nm).a=2√2×0.181=0.5119nmHence, the length of a side of a cell is 0.5119nm.