NEET Solved Paper 2017 Question 35
Question: Which is the incorrect statement?
Options:
A) Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal
B) $ Fe{O _{0.98}} $ has non stoichiometric metal deficiency defect
C) Density decreases in case of crystals with Schottky’s defect
D) $ NaCl(s) $ is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal
Show Answer
Answer:
Correct Answer: A
Solution:
- (a & b)* Frenkel defect occurs in those ionic compounds in which size of cation and anion is largely different. Non-stoichiometric ferrous oxide is $ F{e _{0.93-0.96}}{O _{1.00}} $ and it is due to metal deficiency defect.
