Calcium crystallises in face-centred cubic unit cell with a=0.556nm. Calculate density if: (i) it contained 0.1% Frenkel defect. (ii) it contained 0.1% Schottky defect.
Open in App
Solution
(i) Frenkel defect does not alter the density of solid.
Given that,
Edge length, a=0.556nm=0.556×10−7cm
Number of atoms per unit cell, Z=4 Note: since fcc lattice.