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Among the following the incorrect statement about transition metals is

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Cr, Mo and W have high melting points

With increase in number of unpaired electrons melting point increases

${Mn}^{3 +}$ is more stable than ${Mn}^{2 +}$

They show variable oxidation states

answer is C.

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Detailed Solution

The valence electronic configuration of Mn is 3d⁵ 4s². After losing two electrons, Mn becomes Mn²⁺ and achieves a half-filled stable configuration.

This means that Mn²⁺ is more stable than Mn³⁺.

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