Question

Sodium metal crystallizes in body centred cubic lattice with the cell edge, 4.29 A0. what is length of body diagonal of the unit cell​

Answer 1

Answer:

Let us consider for body center unit cell.

4r=a

3

Therefore,

Radius of Na=

4

3

a

=(

4

3

)(4.29×10

−8

)

=1.86

A

∘

≈1.86×10

−8

cm