Resonance structures of propenal are given below. Which of these resonating structures is more stable? GIve reason for your answer.
Hint: application of resonance structure.
Explanation:
Step 1: The structure having more covalent bonds in a resonating structure, has more stability.
Step 2: There is charge separation in structure (II) and the terminal carbon has only a sextet of electrons in (II). These two factors makes structure (II) less stable.
