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Chemical Properties of Metals and Non-metals

Which of the ...

Question

Which of the 3dseries of the transition metals exhibits the largest number ofoxidation states and why?

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Solution

Mn (Z = 25) = 3d⁵4s²
Mn has the maximumnumber of unpaired electrons present in the d-subshell (5electrons). Hence, Mn exhibits the largest number of oxidationstates, ranging from +2 to +7.

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