The formula of nickel oxide with metal defici | vedclass

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(A) Let the amount of $Ni^{2+}$ ions in the crystal $Ni_{0.98}O$ be $x$.Then,the amount of $Ni^{3+}$ ions in the crystal will be $(0.98 - x)$.Since th

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$0.96$

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(A) Let the amount of $Ni^{2+}$ ions in the crystal $Ni_{0.98}O$ be $x$.Then,the amount of $Ni^{3+}$ ions in the crystal will be $(0.98 - x)$.Since the crystal is electrically neutral,the total positive charge must equal the total negative charge (from $O^{2-}$).$2(x) + 3(0.98 - x) = 2$$2x + 2.94 - 3x = 2$$-x = 2 - 2.94$$-x = -0.94$$x = 0.94$Therefore,the fraction of nickel existing as $Ni^{2+}$ ions is $\frac{0.94}{0.98} \approx 0.96$.

The formula of nickel oxide with metal deficiency defect in its crystal is $Ni_{0.98}O$. The crystal contains $Ni^{2+}$ and $Ni^{3+}$ ions. The fraction of nickel existing as $Ni^{2+}$ ions in the crystal is

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