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A sample of ferrous oxide has actual for...

A sample of ferrous oxide has actual formula `Fe_(0.93)O_(1..00)`. In this sample what fraction of metal ions are `Fe^(2+)` ions? What type of non-stoichiometric defect is present in this sample ?

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Metal deficency defect is present in the sample because iron is present in lesser amount than required according to stoichiometric composition .
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