The bond order of C₂ molecule, considering its molecular orbital configuration, is:
For C₂ : (sigma 1s)² (sigma^* 1s)² (sigma 2s)² (sigma^* 2s)² (pi 2px)² (pi 2py)² . Bonding = 8, antibonding = 4. Bond order = (8 - 4/2) = 2 .
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Molecular Orbital Theory - MOT and Bond Order and Magnetic Properties
