Incorrect order of ionic size is :
(a) \( \mathrm{La}^{3+}\mathrm{Gd}^{3+}\mathrm{Eu}^{3+}\mathr...
Incorrect order of ionic size is :
(a) \( \mathrm{La}^{3+}\mathrm{Gd}^{3+}\mathrm{Eu}^{3+}\mathrm{Lu}^{3+} \)
(b) \( \mathrm{V}^{2+}\mathrm{V}^{3+}\mathrm{V}^{4+}\mathrm{V}^{5+} \)
\( \mathrm{P} \)
(c) \( \mathrm{Tl}^{+}\mathrm{In}^{+}\mathrm{Sn}^{2+}\mathrm{Sb}^{3+} \)
(d) \( \mathrm{K}^{+}\mathrm{Sc}^{3+}\mathrm{V}^{5+}\mathrm{Mn}^{7+} \)
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