Question

.Explain, most of the transition metal compounds are remarkably coloured.​

Answer 1

Answer:

Explanation:

Transition metal ions generally possess one or more unpaired electrons. When visible light falls on a transition metal compound or ion, the unpaired electrons present in the lower energe d-orbital get promoted to high energy d-orbitals, called d-d transition, due to the absorption of visible light. Since, the energy involved in d-d transition is quantised, only a definite wavelength gets absorbed, remaining wavelengths present in the visible region got transmitted. Therefore, transmitted light shows some colour complementary to the absorbed colour.

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Answer 2

ANSWER ;-

Most of the transition metals are coloured due to the vacant d-orbitals and d-d transition .