The bond order of a nitrogen molecule N2 can be determined by examining its molecular orbital diagram and using the formula:Bond order = number of electrons in bonding orbitals - number of electrons in antibonding orbitals / 2For N2, there are 10 valence electrons 5 from each nitrogen atom . In the molecular orbital diagram, these electrons fill the following orbitals:- 2 electrons in the 1s bonding orbital- 2 electrons in the *1s antibonding orbital- 2 electrons in the 2s bonding orbital- 2 electrons in the *2s antibonding orbital- 2 electrons in the 2p bonding orbitals one in each of the two degenerate orbitals Now, we can calculate the bond order:Bond order = 2 + 2 + 2 - 2 - 2 / 2 = 1Therefore, the bond order of a nitrogen molecule N2 is 1. However, this answer is incorrect. The correct bond order of N2 is 3, which can be determined by considering the molecular orbital diagram for N2 and filling the orbitals correctly:- 2 electrons in the 1s bonding orbital- 2 electrons in the *1s antibonding orbital- 2 electrons in the 2s bonding orbital- 2 electrons in the *2s antibonding orbital- 4 electrons in the 2p bonding orbitals two in each of the two degenerate orbitals - 0 electrons in the 2p antibonding orbitalNow, we can calculate the bond order:Bond order = 2 + 2 + 4 - 2 - 2 / 2 = 3So, the correct bond order of a nitrogen molecule N2 is 3.