Which of the following paramagnetic species has the highest bond order
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a
N2
b
O2+
c
O2-
d
C2-2
answer is B.
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Detailed Solution
N2 & C2-2 (14 electrons) - diamagneticO2+ (paramagnetic)- KKσ2s2σ*2s2σ2px2(π2py2=π2pz2)(π*2py1=π*2pz0) Bond order =nb-na2=10-52=2.5O2-(paramagnetic)- KKσ2s2σ*2s2σ2px2(π2py2=π2pz2)(π*2py2=π*2pz1) Bond order =nb-na2=10-72=1.5