What Is the Length of the Diagonal (In Atomic Radii) $\frac { 4 \times r } { \sqrt { 3 } }$

question 32

Multiple Choice

What is the length of the diagonal (in atomic radii) along the face of a face-centered cubic unit cell?

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