Q. 13.8( 10 Votes )

Out of NaCl and A

Answer :

When there is a dislocation of a point in a crystalline solid it is called Frenkel Defect. Considering the nature of a crystalline solid they are bound by ionic bonds also called electrovalent bonds. When the attraction between to two atoms in the crystal is strong enough and the charges are properly isolated between a cation and an anion it is capable to form a crystal defects.

NaCl undergoes strong ionization when in an electrolytic medium; this suggests that Na and Cl carry individual charges implying it to impart crystal defects. When in case of Ag – Cl the bond is covalent and the electrons are shared among the two atoms due to their large atomic size and low electronegativity difference.

Thus NaCl shows crystal defects while AgCl does not.

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