Problem 13
What do you mean by Bravais lattices and crystal systems?
Problem 14
Discuss the methods for designation of planes of a crystal.
Problem 15
Write short notes on the following: (a) fcc arrangement (b) Schottky defect (c) Metal-excess defect (d) Limiting radius ratio
Problem 16
Calculate the percentage of occupied space in bcc and hcp arrangements.
Problem 17
How does coordination number vary with radius ratio? How does it affect the geometry of the ionic crystal?
Problem 18
Discuss the structure of the following ionic crystal types: (a) Rock salt type structure (b) Fluorite-type structure (c) Zinc-blende-type structure
Problem 19
Derive Born-Lande equation and hence prove that lattice energy of an ionic crystal is inversely proportional to the interionic distances.
Problem 20
Discuss Born-Haber cycle with the help of a suitable example.
