Chemical Bonding And Molecular Structure

Bond order \(=2.0 ; \quad\) Paramagnetic in nature; One sigma and one pi bond formed.

Bond order \(=0 \quad \mathrm{C}_2\) molecule is non-existent.

Bond order \(=2.0 ; \quad\) Diamagnetic in nature; Both bonds formed are pi bonds.

Bond order \(=1.5 ; \quad\) Paramagnetic in nature; Both bonds formed are sigma bonds \((\sigma)\).