MCQ
The correct order of increasing ionic radii is .... .
- ✓$Mg ^{2+}< Na ^{+}< F ^{-}< O ^{2-}< N ^{3-}$
- B$N ^{3-}< O ^{2-}< F ^{-}< Na ^{+}< Mg ^{2+}$
- C$F ^{-}< Na ^{+}< O ^{2-}< Mg ^{2+}< N ^{3-}$
- D$Na ^{+}< F ^{-}< Mg ^{2+}< O ^{2-}< N ^{3-}$
(Isoelectronic species)
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i.$\frac{\text{K}^+}{\text{K}}=-3.02\text{V}$ ii.$\frac{\text{Cu}^{2+}}{\text{Cu}}=+0.34\text{V}$
iii.$\frac{\text{Hg}^{2+}}{\text{Hg}}=0.92\text{V}$ iv.$\frac{\text{Cr}^{3+}}{\text{Cr}}=-0.74\text{V}$
Decreasing order of reducing power of these elements is: