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Assign reasons for each of the following: (i) Transition metals generally form coloured compounds. (ii) Manganese exhibits the highest oxidation state of +7 among the 3d-series of transition elements. |
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Answer» Solution :(i) Transition ELEMENTS generally form coloured compounds on account of d-d TRANSITIONS. Due to partial absorption of VISIBLE light (ii) Mn shows the HIGHEST oxidation state +7. The bonds in such a higher oxidation state are formed by sharing electrons not by the loss of electrons.e.g., Mn shows + 7 oxidation state in `MnO_4^(-)` in which all the bonds are covalent. |
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