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Analyses shows that FeO has a non-stoich...

Analyses shows that FeO has a non-stoichiometric composition with formula `Fe_(0.95)O_(1.00)`. Give reason.

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Shows metal deficiency defect / It is a mixture of `Fe(2+) and Fe^(3+)`/Some `Fe^(2+)` ions are replaced by `Fe^(3+)` / Some of the ferrous ions get oxidised to ferric ions.
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