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

Assign reasons for each of the following:(i) Transition metals general

1.	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
Answer» (i) This is due to d-d transition. When visible (white) light falls on a transition metal compounds, they absorb certain radiation of visible light and transmit the remaining ones. The colour observed corresponds to complementary colour of the light absorbed. (ii) As manganese has maximum number of unpaired electrons (5) in 3d subshell in addition to 2 electrons in the 4s subshell.

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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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