Question

Sodium has body-centered packing. Distance between two nearest atoms is $3.7$ $\mathring{A}$. The lattice parameter is:

• A. $4.3$ $\mathring{A}$
• B. $3.0$ $\mathring{A}$
• C. $8.6$ $\mathring{A}$
• D. $6.8$ $\mathring{A}$

Answer 1

Answer: (A)

$4.3$ $\mathring{A}$

Atomic radius of body centered cubic is calculated as shown above.

Hence, the correct option is $\text{A}$