Solid State Question 210

Question: An example of a non-stoichiometric compound is

[NCERT 1983]

Options:

A) $ Al_2O_3 $

B) $ Fe_3O_4 $

C) $ NiO_2 $

D) $ PbO $

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Answer:

Correct Answer: B

Solution:

$ Fe_3O_4 $ is a non-stoichiometric compound because in it the ratio of the cations to the anions becomes different from that indicated by the chemical formula.