Which of the following statements is correct in the context of the allene molecule, C3H4? — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Allene (CH2=C=CH2) has a central carbon double-bonded to two terminal carbons. Step 2: The central carbon forms 2 sigma bonds (sp hybridized), while the terminal carbons form 3 sigma bonds (sp2 hybridized). Step 3: To form two perpendicular pi systems with the central carbon's 2p orbitals, the two terminal CH2 planes must lie mutually perpendicular to each other. Thus, all three statements are correct.