Question

A compound forms hexagonal close-packed structure. What is the total number of voids in $0.5$ mole of it?

• A. $5.0\times {10}^{23}$
• B. $9.0\times {10}^{23}$
• C. $8.0\times {10}^{-23}$
• D. $2\times {10}^{-23}$

Answer 1

The correct option is B $9.0\times {10}^{23}$

Option B is correct