Which of the following represents the incorrect order of the properties indicated?
(a) \( \mathr...
Which of the following represents the incorrect order of the properties indicated?
(a) \( \mathrm{Ni}^{2+}\mathrm{Cr}^{2+}\mathrm{Fe}^{2+}\mathrm{Mn}^{2+} \) (size)
(b) \( \mathrm{Sc}\mathrm{Ti}\mathrm{Cr}\mathrm{Mn}( \) size \( ) \)
(c) \( \mathrm{Ni}^{2+}\mathrm{Co}^{2+}\mathrm{Fe}^{2+}\mathrm{Mn}^{2+} \) (unpaired electron)
(d) \( \mathrm{H}_{3} \mathrm{AsO}_{4}\mathrm{H}_{3} \mathrm{PO}_{4} \) (acidic strength order)
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