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Assign reasons for each of the following : (i) Transiti9n 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 METALS generally form coloured compounds. Because the energy of excitation of an ELECTRON ind-orbital CORRESPONDS to the visible region. (ii) Manganese exhibits the highest oxidation state of + 7 AMONG the 3d series of transition, elements because all the oxidation states from + 2 to+ 7. Electronic configuration of `M_n`. `[Ar]3d^5S^2M_n^(2+):1S^2,2S^2,2P^6 3P^6 3d^5`. It shows largest no, of oxidation states as it have maximum no. of UNPAIRED electrons. |
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