Which of the following compounds is likely to show both Frenkel and Schottky defects in its crystalline form?

What is the percentage of $Fe^{+3}$ among cations in $Fe_{0.93}O_{1.00}$?

Write a short note on impurity defects.

Compounds with low coordination numbers of cations and anions exhibit Frenkel defects because the compound has ................

Which type of defect is observed in $AgBr$?

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A):$ In a particular point defect,an ionic solid is electrically neutral,even if few of its cations are missing from its unit cells.
Reason $(R):$ In an ionic solid,Frenkel defect arises due to dislocation of cation from its lattice site to interstitial site,maintaining overall electrical neutrality.
In the light of the above statements,choose the most appropriate answer from the options given below: