Question

2. Which of the following is a non-stoichiometric defect? (a)Frenkel defect (b)Schottky defect (c)metal deficiency defect (d)interstitial defect ​

Answer 1

Answer:

(c) metal deficiency defect (anion is missing from lattice site) In Frenkel defect the smaller ion occupies the interstitial sites and Schottky defect equal number of cations and anions are missing. Interstitial defect an atom or molecule occupies intestinal sites so in these three defects the ratio of positive and negative ions (Stoichiometric) of a solid is not disturbed in these threeRead more on Sarthaks.com - https://www.sarthaks.com/1213552/following-stoichiometric-frenkel-schottky-defect-deficiency-defect-interstitial-defect?show=1213557

Answer 2

Non-stoichiometric defect is (c)metal deficiency defect

• The Non-stoichiometric defect are type of defects that disturb the arrangement of a crystalline structure. One such defect is metal deficiency defect which contain less amount of metal. One example is FeO. Hence, correct option is (c)metal deficiency defect.
• Frenkel and Schottky defects are found in ionic solids. In Frenkel defect dislocation of ion takes place while in Schottky a vacancy is created in ionic solid.
• When in non-ionic solids any atom occupies an interstitial site is called as interstitial defect.