Published by:
CGP EDU Academic Team
Published on: August 14, 2026
An element E crystallizes in body centred cubic structure. If the edge length of the cell is 1.469 × 10 –10 m and the density is 19.3 g cm 3 , calculate the atomic mass of this element. Also calculate the radius of an atom of this element
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. For bcc structure, z = 2
a = 1.469 × 10 –10 m = 1.469 × 10 –8 cm
d = 19.3 g cm –3 M = ?, r = ?
d = 
⇒ M = 
∴ M = 
M = 
M = 184.22 × 10
–1 = 18.42 g/mol
Also for bcc, r = 
r = 
× 1.469 × 10 –10 = 
= 0.636 × 10
–10 = 63.6 × 10 –12 = 63.6 pm.
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