Time: 30 Minute
Their constituent particles are of irregular shapes and have short range order
They are isotropic in nature and melt over a range of temperature. Because of which they are also known as pseudo solids or super cooled liquids
When cut with a sharp-edged tool, they cut into two pieces with irregular surfaces
They have definite heat of fusion
(i), (ii) and (iii)
(i), (ii)
(i), (iii)
(ii) and (iii)
Network Solids
Ionic Solids
Molecular Solids
Metallic Solids
32%
34%
28%
20%
4 and 8
4 and 6
6 and 4
4 and 4
Schottky defect
Frenkel defect
Interstitial position
F-centresF-centres
2
4
6
8
X3Y
XY
XY2
XY3
5.96
5.96 X 10-2
5.96 X 10-1
5.96 X 10-3
1 (C), 2(D), 3(A) and 4 (B)
1 (A), 2(C), 3(B) and 4 (D)
1 (A), 2(C), 3(D) and 4 (B)
1 (D), 2(A), 3(B) and 4 (C)
8.12
12, 8
4, 8
84
X3Y4
X4Y3
X2Y3
X2Y
SiC, Graphite, Si
Plastic
LiBr , Ammonium phosphate
Brass, Rb