Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Calcium crystallises in face centred cubic lattice with edge length of the unit cell = 0.556 nm.
(i) What to the density if it contain 0.1% Frenkel defect ?
(ii) What is the density if contain 0.1% schottky defect ?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(i) 1.5455; (ii) 1.5357
Sol.(i) Frenkel defect does not alter the density.
∴ d = 
= 1.5455 gm/cm 3 (ii) Schottky defect lowers the density of solid
Z = 4 – 
= 3.996
d = 
= 1.5357 gm/cm
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