Discussion
A chromophore is a group that
Answer: C
Correct answer: absorbs in the ultraviolet or visible region
A chromophore is the group responsible for the absorption - a carbonyl, a nitro group, an extended conjugated system - and it is what gives a compound its colour when the absorption falls in the visible. An auxochrome is the different thing described in the next question: a group that modifies a chromophore’s absorption without being the source of it.
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