Which of the following has minimum bond length?

O2(8+8=16)=σls2,σ1*s2,σ2s2,σ*2s2,σ2pz2(π2px2≈π2py2)(π*2px1≈π*2py1) Bond order =10-62=2Similarly, O2+(8+8-1=15)BO=10-52=2.5⇒ O2-(8+8+1=17),BO=10-72=1.5⇒ O22-(8+8+2=18)BO=10-82=1∴ Bond order ∝1 bondlength Thus, O2+ has the minimum bond length as its bond order is maximum.