2. If the radius of a body-centered cubic unit cell is 2.55 x 10-8 cm, what is the length of the edge in pm

Step-by-step explanation:

Given that,

The radius of a bcc unit cell is,

We need to find the length of the edge in pm.

We know that,

For a bcc unit cell, the relation between the radius and the length of the edge is given by :

Edge length,

Hence, this is the required soolution.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)