Why do transition metals form coloured complexes ?

Why do transition metals form complexes ?

Why do transition elements form coloured compounds ?

(a) What is Lanthanoid contraction? Give the cause of lanthanoid contraction. (b) Why do transition metals form many coloured ions?

Why do transition metals from alloy ?

Why do transition metals form complex salts?

(a) Why are Zn, Cd and Hg not regarded as transition metals? (b) Why do transition metals form complexes ? (c ) Why are Zn^(2+) salts white in colour?

Why do transition metals form complexes and coloured ions?

Why do the transition elements form coloured compounds?

(b) Why do transition metals form alloy ?