Question

Why transition metals form coloured compounds

Answer 1

Transition metals show paramagnetic nature. Paramagnetism arises due to the presence of unpaired (n-1)d electrons.

(ii)Transition elements have high effective nuclear charge and a large number of valence electrons.Therefore, they form very strong metallic bonds. As a result, the enthalpy of atomization of transition metals is high.

Answer 2

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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.

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