List of top Physical Chemistry Questions on Solid State

The unit cell of a two-dimensional square lattice with lattice parameter a is indicated by the dashed lines as shown below:

The percentage (%) area occupied by the grey circles (of radius r) inside the unit cell is _______. (rounded off to the nearest integer)

Wavelength of X-rays used in a diffraction experiment is 1.54 Å. X-rays are diffracted from a set of planes with an interplanar spacing of 1.54 Å. Then the angle θ (in degrees) corresponding to the first-order Bragg diffraction is

The separation (in nm) of {134} planes of an orthorhombic unit cell (with cell parameters 𝑎=0.5 nm, 𝑏=0.6 nm, and 𝑐=0.8 nm) is

All possible lattice types are observed in the

The common point defect(s) in a solid is/are

The d spacing for the first-order X-ray ($\lambda$= 1.54 Å) diffraction event of metallic iron (fcc) at $2\theta= 20.2°$ is _______.Å. (round off to three decimal places)

The volume fraction for an element in an fcc lattice is ____________ . (round off to two decimal places)