Resonance structures of propenal are given below. Which of these resonating structures is more stable ? Give reason for your answer. underset(I)(CH_(2)=CH-CH=O) harr underset(II)(overset(o+)(C)H_(2)-CH=CH-overset(Θ)(O))

Resonance structures of propenal are given below. Which of these reson

1.	Resonance structures of propenal are given below. Which of these resonating structures is more stable ? Give reason for your answer. underset(I)(CH_(2)=CH-CH=O) harr underset(II)(overset(o+)(C)H_(2)-CH=CH-overset(Θ)(O))
Answer» Solution :Resonance STRUCTURES of PROPENAL are shown below : Structure II INVOLVES separation of +ve and -ve charges. Furthermore, the terminal carbon has only a sextet of electrons. Due to these two FACTORS, structure (II) is less stable than structure (I).