1.

The non- stoichiometric compound `Fe_(0.94)O` is formed when `x%` of `Fe^(2+)` ions are replaced by as many `2//3 Fe^(3+)` ions The value of x is:A. 18B. 12C. 13D. 6

Answer» Correct Answer - A
The no. of `Fe^(3+)` ions replacing `xFe^(2+)` ions `=2x//3`
`:.` Vacancies of cations `=1-2x//3=x//3`
Both `x//3=1-0.94=0.96`
`:. X=0.06xx3=0.18 or 18%`


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