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

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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 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 $WRONG$?

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