What Is the Distance, in Atomic Radii, Along Any Edge $\frac { 4 \times r } { \sqrt { 3 } }$

Multiple Choice

What is the distance, in atomic radii, along any edge of a body-centered cubic unit cell?

A) $\frac { 4 \times r } { \sqrt { 3 } }$
B) 2 × r
C) 4 × r
D) $\frac { 2 \times r } { \sqrt { 4 } }$
E) r