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Question
Name the element of 3d series which exhibits the largest number of oxidation states. Give reason.
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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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