The compound Y ~Ba_2 Cu_3 O_7, which shows superconductivity, has… - Vidyadip

Question

The compound $\mathrm{Y} \mathrm{~Ba}_2 \mathrm{Cu}_3 \mathrm{O}_7$, which shows superconductivity, has copper in x oxidation state. Assume that the rare earth element yttrium is in its usual +3 oxidation state. Predict the value of $x$.

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Answer

$1 x(+3)+2 x(+2)+3 x+7 x(-2)=03+4+3 x-14=0$
$3 x=7 ; x=\frac{7}{3}$

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