50) Introduction of auxochrome in a
molecule shifts the absorption to
O a)Shorter wavelength
b) longer wavelength
Ο Ο Ο Ο
O c) higher energy
O d) None of these
Answers
Answer:
ans.
Explanation:
An auxochrome (from Ancient Greek αὐξάνω auxanō "increase" and χρῶμα chrōma "colour") is a group of atoms attached to a chromophore which modifies the ability of that chromophore to absorb light. They themselves fail to produce the colour; but when present along with the chromophores in an organic compound intensifies the colour of the chromogen.[1] Examples include the hydroxyl group (−OH), the amino group (−NH2), the aldehyde group (−CHO), and the methyl mercaptan group (−SCH3).[2]
An auxochrome is a functional group of atoms with one or more lone pairs of electrons when attached to a chromophore, alters both the wavelength and intensity of absorption. If these groups are in direct conjugation with the pi-system of the chromophore, they may increase the wavelength at which the light is absorbed and as a result intensify the absorption. A feature of these auxochromes is the presence of at least one lone pair of electrons which can be viewed as extending the conjugated system by resonance
Answer:
Higher energy.
Explanation:
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