The electronic configuration of the particles are, C2=σ1s2<σ*1s2<σ2s2<σ*2s2<π2px2=π2py2 N2=σ1s2<σ*1s2<σ2s2<σ*2s2<π2px2=π2py2<σ2Pz2 O2=σ1s2<σ*1s2<σ2s2<σ*2s2<σ2px2<σ2py2<π2pz2<π*2px1=π2py1 F2=σ1s2<σ*1s2<σ2s2<σ*2s2<σ2px2<σ2py2<π2pz2<π*2px2=π2py2 The molecule acquires equal number of bonding and anti bonding molecular orbitals.