In which of the following transformations, the bond order has increased and the magnetic behaviour h — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Analyze the bond orders and magnetic properties before and after each transformation. Step 2: For C2+ -> C2: C2+ has 7 valence electrons, a bond order of 1.5, and is paramagnetic. C2 has 8 valence electrons, a bond order of 2.0 (only pi bonds), and is diamagnetic. Step 3: This transformation shows both an increase in bond order (1.5 -> 2.0) and a change in magnetic behavior (paramagnetic -> diamagnetic), matching option (a).