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Give examples and suggest reasons for the following feature of the transition metal chemistry: The lowest oxide of transition metal is basic the highest is amphoteric/acidic.

8.25 Give examples and suggest reasons for the following feature of the transition metal chemistry:

(i) The lowest oxide of transition metal is basic, the highest is amphoteric/acidic.
 

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M manish

The lowest oxidation states of transition metals are basic because some of their valence electrons are not participating in bonding. Thus they have free electrons, which they can donate and act as a base. In the higher oxide of transition metals, valence electron of their participate in bonding, so they are unavailable. But they can accept electrons and behave as an acid. For example MnO(+2)- behave as a base and Mn_{2}O_{7} (+7)behave as an acid.

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