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NEET levelSingle correct optionDifficulty 1 of 3df116

Compounds of transition metals are generally coloured mainly because of:

Alarge ionic size
Bd-d transitions between split d orbitals
Ccomplete filling of the d subshell
Dhigh ionisation enthalpy

Answer: B

Partly filled d orbitals are split by ligands. An electron can absorb visible light and move to a higher d orbital, and the transmitted light is the complementary colour.

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