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Question
Name the element of 3d series which exhibits the largest number of oxidation states. Give reason.
Solution
The element that shows the largest number of oxidation states in the 3d series is Manganese (Mn). It shows the following oxidation states +2, +3, +4, +5, +6, and +7. It is because it contains the maximum no. of unpaired e–s in the outermost shell, i.e., 3d94s2.
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