Question

Draw molecular orbital energy diagram of O2 molecule and mention its bond order. Explain why O2 molecule is psramagnetic.

Answer 1

Bond order= no. of antibonding - no. of bonding orbital /2
= 8-2/2=2
from the molecular orbital diagram of O2 is created the above order of filling the molecular orbital used to unpaired electron one in each π*2px and π*2py molecular orbital . Thus O2 molecule possess two unpaired electron even in the ground state the unpaired electron imparted paramagnetic character to oxygen molecule