The lattices has the highest packing efficiency among the following is-
1. Simple cubic
2. Body-centred cubic
3. Hexagonal close-packed lattice
4. None of the above
Statement 1: | ZnS shows Frenkel defect. |
Statement 2: | AgBr shows Frenkel as well as Schottky defect. |
A group 14 element is converted into n-type semiconductor by doping it with :
1. Boron
2. Aluminium
3. Phosphorous
4. All of the above.
Column I | Column II |
a. Tin | i. Polar molecular solid |
b. Urea | ii. Metallic solid |
c. Zinc sulphide | iii. Covalent or network solid |
d. Silicon carbide | iv. Ionic solid |