In a dye molecule, what is a chromophore?
Correct answer C. A group of atoms responsible for the colour, such as –N=N–
Explanation
A chromophore is an unsaturated group, such as –N=N–, –NO₂ or C=O in conjugation, that absorbs visible light. Auxochromes such as –OH and –NH₂ deepen the colour and help the dye bind to fibres.
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