Embibe Experts Solutions for Chapter: Solid State, Exercise 1: Exercise 1

Schottky defect in a crystal arises due to

The presence of impurity in a solid_____.

In metallic solids, the number of atoms for the face centred and the body-centred cubic unit cells are, respectively.

A metal with an atomic radius of $141.4 \mathrm{pm}$ crystallizes in the face centred cubic structure. The volume of the unit cell in ${\mathrm{pm}}^3$ is 

In a cubic close packed structure, the fractional contributions of an atom at the corner and at the face in the unit cell are, respectively:

The packing efficiency of the face centred cubic $\left(\mathrm{fcc}\right)$, body centred cubic $\left(\mathrm{bcc}\right)$ and simple/primitive cubic $\left(\mathrm{pc}\right)$ lattices follows the order

A solid is hard and brittle. It is an insulator in solid state but conducts electricity in molten state. The solid is a

Atoms of the element $\mathrm{Z}$ form a hexagonal closed pack $\left(\mathrm{hcp}\right)$ lattice, and atoms of the element $\mathrm{X}$ occupy all the tetrahedral voids. The formula of the compound is: