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Which of the following alkenes would have the largest l max ?

 Which of the following alkenes would have the largest lmax?


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Grade:upto college level

1 Answers

Kevin Nash
askIITians Faculty 332 Points
10 years ago
D) Alkyl substitution will increase ?max because the alkyl groups can stabilize the excited state by hyperconjugation resonance. Therefore the excited state will have a lower energy which translates to a longer wavelength. E = hc/?

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