Question

Why do transition metals form different coloured compounds?

Answer 1

Answer:

In transition metals, however, visible light excites the electrons from a lower d orbital to a higher one and only letting some light through. Colored compounds of transition elements are associated with partially filled (n-1)d orbitals. ... The color of ion is complementary of the color absorbed by it.

Answer 2

Answer:

Breaking Atom Transition metals can form colored compounds when bonded to other elements due to the energy levels of the d block where electrons can be excited and move between energy levels.

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