Most of the compounds of transition metlas are coloured in solid state

1.	Most of the compounds of transition metlas are coloured in solid state of solutions. The transition metals which have either completely filled d-orbitals or completely empty d-orbitals are colourless. The colour of transition metal is due to(a) presence of unpaired d-electrons(b) small size(c) metallic nature(d) All of these
Answer» Correct Option (a) presence of unpaired d-electrons Explanation : Unpaired electrons undergo excitation from lower energy level to higher energy level, hence causes color to transition metal ions. Then, phenomenon is called d-d transition.

Most of the compounds of transition metlas are coloured in solid state of solutions. The transition metals which have either completely filled d-orbitals or completely empty d-orbitals are colourless. The colour of transition metal is due to(a) presence of unpaired d-electrons(b) small size(c) metallic nature(d) All of these

Answer»

Correct Option (a) presence of unpaired d-electrons

Explanation :

Unpaired electrons undergo excitation from lower energy level to higher energy level, hence causes color to transition metal ions. Then, phenomenon is called d-d transition.

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