Which of the following is not crystal?
A
Sodium chloride
B
Lead
C
Copper (II) tetraoxosulphate (VI)
D
Glass
E
Germanium
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Glass is not a crystal because it lacks the long-range ordered atomic structure characteristics of crystalline materials. instead, it is an amorphous solid.
Source: Myschool Past Questions Archive (Record #24172)