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Author Question: Pericyclic reactions occur in a single step with the _____. a. formation of a radical b. formation ... (Read 103 times)

anjilletteb

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Pericyclic reactions occur in a single step with the _____.
 a. formation of a radical
 b. formation of an ionic intermediate
 c. formation of a molecular ion
 d. formation of a transition state

Question 2

Why carbonyl groups of aldehydes and ketones on conjugation with carboncarbon double bonds show strong absorption in the ultraviolet spectrum?



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kardosa007

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Answer to Question 1

d

Answer to Question 2

The presence of conjugation in aldehydes and ketones decreases the energy gap between filled and unfilled  orbitals. Hence, the strong absorption observed in the ultraviolet spectrum is because of the  to  transition.




anjilletteb

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Reply 2 on: Aug 23, 2018
YES! Correct, THANKS for helping me on my review


ryhom

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Reply 3 on: Yesterday
Wow, this really help

 

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