Question

The maximum radius of sphere that can be fitted in the octahedral hole of cubical closed packing of sphere of radius $r$ is.

• A. 0.732 $r$
• B. 0.414 $r$
• C. 0.225 $r$
• D. 0.155 $r$

Answer 1

Answer: (B)

0.414 $r$

Answer 2

$r = 0.414r$.