Question

please answer question 7 using question 5 and the molecular orbital diagram given.

5. Prepare a molecular orbital diagram for BN. You may consider valence orbitals only. Label the atomic orbitals for B and N with the appropriate potential energy. Decide which orbitals have the correct symmetry, orientation, and potential energies to interact (see the handout provided during class). Label the valence atomic orbitals with the appropriate potential energy. Should s-p mixing be considered for BN? How will the MO diagram change if s-p mixing is not involved? Based on your diagram, is BN expected to be paramagnetic or diamagnetic? Does your prediction change depending on whether or not s-p mixing is considered? Why or why not? 6. Using your M.O. diagram, write the valence electron configuration in the general form (02.)"(Tt2p)" Be sure to follow the Aufbau principle. For example, the valence electron configuration for the MOs of O2 is (02)+(6+2)+(2p)?(112p)* (Tt*2p)2 7. Based on your M.O. diagram, what bond order is predicted for BN?

Answer 1

Bond order = (1/2) × (number of bonding electrons - number      of  antibonding electrons)

No.of bonding electron = 6

No.of antibonding electron = 2

Bond order = (1/2)× (6 -2)

= (1/2) ×(4)

= 2