According to the molecular orbital theory, the bond order of a molecule can be calculated using the following formula:Bond order = Number of electrons in bonding orbitals - Number of electrons in antibonding orbitals / 2For a nitrogen molecule N2 , each nitrogen atom has 7 electrons, so there are a total of 14 electrons in the molecule. The molecular orbital configuration for N2 is:1, 1*, 2, 2*, 2x, 2y, 3Now, let's count the electrons in bonding and antibonding orbitals:Bonding orbitals: 1 2 electrons , 2 2 electrons , 2x 2 electrons , 2y 2 electrons , and 3 2 electrons = 10 electronsAntibonding orbitals: 1* 2 electrons and 2* 2 electrons = 4 electronsUsing the bond order formula:Bond order = 10 - 4 / 2 = 6 / 2 = 3So, the bond order of the nitrogen molecule N2 according to the molecular orbital theory is 3.