CH₃CHO is the correct choice. This is because it exhibits a lower positive inductive effect on the carbonyl group, leading to a higher positive charge on the carbon atom. This increased positive charge facilitates nucleophilic addition reactions.
So, the correct option is (D): CH3CHO
Ethanal to But-2-enal
List I (Spectral Lines of Hydrogen for transitions from) | List II (Wavelength (nm)) | ||
A. | n2 = 3 to n1 = 2 | I. | 410.2 |
B. | n2 = 4 to n1 = 2 | II. | 434.1 |
C. | n2 = 5 to n1 = 2 | III. | 656.3 |
D. | n2 = 6 to n1 = 2 | IV. | 486.1 |