Which of the Following Electronic Transitions Is (Are) Apparent in the Ultraviolet-Visible

question 50

Multiple Choice

Which of the following electronic transitions is (are) apparent in the ultraviolet-visible spectrum of acrolein, H₂C=CHCHO?
1) n $\rarr$ $\pi$ *
2) $\pi$ $\rarr$ $\pi$ *
3) $\sigma$$\rarr$ $\pi$ *

• A)only 1
• B)only 2
• C)only 1 and 2
• D)1, 2 and 3

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