試題詳解

10. A metal crystallizes in a body-centered cubic unit cell with an edge length of 1.95 × 10² pm. Assume the atoms in the cell touch along the cube diagonal. What will be the percentage of empty volume in the unit cell?
(A) 68.0%
(B) 0.0%
(C) 45.0%
(D) 32.0%
(E) 26.0%