A) \[{{V}^{2+}}<C{{r}^{2+}}<M{{n}^{2+}}<F{{e}^{2+}}\]: paramagnetic behavior
B) \[N{{i}^{2+}}<C{{o}^{2+}}<F{{e}^{2+}}<M{{n}^{2+}}\]: ionic size
C) \[C{{o}^{3+}}<F{{e}^{3+}}<C{{r}^{3+}}<S{{c}^{3+}}\]: stability in aqueous solution
D) \[Sc<Ti<Cr<Mn\]: number of oxidation states
Correct Answer: A
Solution :
Number of unpaired\[{{e}^{-}}\]in\[F{{e}^{2+}}\]is less than\[M{{n}^{+2}}\].
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