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(a) Transition metals show variable oxid...

(a) Transition metals show variable oxidation states. Explain.
(b) Which metal of 3d-series exhibit maximum number of oxidation state?

Text Solution

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(a) The variable oxidation state of transition metals are due to :
(i) both ns and (n - l)d electrons involve in bonding,
(ii) ns and (n-l)d subshells have almost same energy.
(b) Manganese (Mn)
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