Question

A solid has a $'bcc?? structure. If the distance of nearest approach between two atoms is$1.73??, the edge length of the cell is

• A. $314.20 \,pm$
• B. $1.41 \,pm$
• C. $200 \,pm$
• D. $216 \,pm$

Answer 1

Answer: (C)

$200 \,pm$

Answer 2

For bee structure $d=\frac{\sqrt{3}}{2}a$ where $d =$ distance between two atoms $a =$ edge length $1.73=\frac{\sqrt{3}}{2}a$ $a=\frac{2\times1.73}{\sqrt{3}}=2??200\,pm$