Frenkel and Schottky defects are:
Most crystals show good cleavage because their atoms, ions or molecules are
The element which is used as semiconductor is
Certain crystals produce electric signals on application of pressure. This phenomenon is called:
Which of the following compounds is a good conductor of electricity in solution state?
In NaCl crystal each Cl– ion is surrounded by
A solid with high electrical and thermal conductivity is
The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behaviour is a characteristic of substance forming
An example of a covalent crystalline solid is:
