Question

A metal has bcc structure and the edge length of its unit cell is $3.04\dot{A}$. The volume of the unit cell in $c{m}^3$ will be :

• A. $1.6\times {10}^{21}c{m}^3$
• B. $2.81\times {10}^{-23}c{m}^3$
• C. $6.02\times {10}^{-23}c{m}^3$
• D. $6.6\times {10}^{-24}c{m}^3$

Answer 1

The correct option is B $2.81\times {10}^{-23}c{m}^3$

Volume of unit cell $\left(V\right)=a^3$
$\therefore ={(3.04\times {10}^{-8}cm)}^3$
$=2.81\times {10}^{-23}c{m}^3$