Which of the following statements is WRONG? | vedclass

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(A) Statement $A$ is $WRONG$ because metals can exhibit both stoichiometric and non-stoichiometric defects (such as metal excess or metal deficiency d

Vedclass · Accepted Answer

$A$. $A$ metal can show only stoichiometric defects

Vedclass · Answer

(A) Statement $A$ is $WRONG$ because metals can exhibit both stoichiometric and non-stoichiometric defects (such as metal excess or metal deficiency defects).Statement $B$ is $CORRECT$ because in Schottky defects,equal numbers of cations and anions are missing from the lattice,which decreases the mass while the volume remains effectively constant,thus reducing density.Statement $C$ is $CORRECT$ because the introduction of foreign atoms (impurities) into the crystal lattice changes the mass of the unit cell,thereby altering the density.Statement $D$ is $CORRECT$ because $F$-centres are formed when an anion is missing from its lattice site and an electron occupies the vacancy to maintain electrical neutrality,which is a type of metal excess defect.

Which of the following statements is $WRONG$?

Similar Questions

Metal deficiency defect is shown by $Fe_{0.93}O$. In the crystal,some $Fe^{2+}$ cations are missing and loss of positive charge is compensated by the presence of $Fe^{3+}$ ions. The percentage of $Fe^{2+}$ ions in the $Fe_{0.93}O$ crystals is $....$ (Nearest integer)

Which of the following statements is true about $Schottky$ defect?

Identify the defect developed when an ion of an ionic compound is missing from its regular site and occupies an interstitial position between lattice points.

Write a short note on impurity defects.

In ionic compounds where the sizes of the cation and anion are almost similar,which defect is observed?

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