which of 3d series of the transition metal exhibits the largest number og oxidation states and why
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Manganese (Z = 25) exhibits largest number of oxidation states. This is because its electronic configuration is 3d54s2 and it has maximum number of electrons (five d electrons and two s electrons) to lose or share. Thus, it can exhibits an oxidation state of +2 to +7 which is the maximum number.
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Mn(Z=25)has the maximum number of unpaired electrons present in the d -subshell(5electrons).Mn exhibits the largest number of oxidation States ranging from +2 to +7.
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