`FeO` crystallizes in `NaCl`-type of crystal lattice. The crystals of `FeO` are deficient in
Channel: Doubtnut
Date: 2020-07-26

`FeO` crystallizes in `NaCl`-type of crystal lattice. The crystals of `FeO` are deficient in iron and are always non-stoichiometric. Some cationic sites are vacant and some contain `Fe^(3+)` ions but the combination is such that the structure is elctrically neutral. The formula approximates to `Fe_(0.95)O`.  a. What is the ratio of `Fe^(2+)` to `Fe^(3+)` ions in the solid?  b. What percentage of cation sites are vacant?