Embibe Experts Solutions for Chapter: Solid State, Exercise 2: Exercise-2

In a $\mathrm{CCP}$ lattice of $\mathrm{X}$ and $\mathrm{Y}$, the $\mathrm{X}$ atoms are present at the corners, while the $\mathrm{Y}$ atoms are at the face centres. Then the formula of the compound if one of the $\mathrm{X}$ atoms from a corner is replaced by $\mathrm{Z}$atoms is (also mono-valent)?

In a multi layered close-packed structure

$\mathrm{BaO}$ has a rock-salt type structure. When subjected to high pressure, the ratio of the coordination number of ${\mathrm{Ba}}^{+2}$ ion to ${\mathrm{O}}^{-2}$ changes to

In the Schottky defect,

In a crystalline solid having molecular formula ${\mathrm{A}}_2\mathrm{B}$ anions $\left(\mathrm{B}\right)$ are arranged in cubic close packed lattice and cations $\left(\mathrm{A}\right)$ are equally distributed between octahedral and tetrahedral voids.
(i) What percentage of octahedral voids are occupied?
(ii) What percentage of tetrahedral voids are occupied? Report your answer $\left(\right(\mathrm{i})-(\mathrm{ii}\left)\right)$.

A metal crystallises in $\mathrm{bcc}$. Find the $\%$ fraction of edge length not covered and also $\%$ a fraction of edge length converted by the atom is:

Select the correct statements about three dimensional HCP system :

Which of the following is/are correct?