1. What kind of orbital is this? (A)  g (B)  u * (C)  g * (D)  u (E)  g * side viewview along molecular axis

2. What kind of orbital is this? (A)  g no nodal plane containing the bond...  ; even inversion symmetry... g no nodal plane between nuclei... bonding; (B)  u * (C)  g * (D)  u (E)  g * side viewview along molecular axis

3. What kind of orbital is this? (A)  g (B)  u * (C)  g * (D)  u (E)  g * side viewview along molecular axis

4. What kind of orbital is this? (A)  g (B)  u * no nodal plane containing the bond...  ; odd inversion symmetry... u nodal plane between nuclei... antibonding; (C)  g * (D)  u (E)  g * side viewview along molecular axis

5. What kind of orbital is this? (A)  g (B)  u * (C)  g * (D)  u (E)  g * side view view along molecular axis

6. What kind of orbital is this? (A)  g (B)  u * (C)  g * one nodal plane containing the bond...  ; even inversion symmetry... g nodal plane between nuclei... antibonding; (D)  u (E)  g * side view view along molecular axis

7. What kind of orbital is this? (A)  g (B)  u * (C)  g * (D)  u (E)  g * side view view along molecular axis

8. What kind of orbital is this? (A)  g (B)  u * (C)  g * (D)  u one nodal plane containing the bond...  ; odd inversion symmetry... u no nodal plane between nuclei... bonding; (E)  g * side view view along molecular axis

9. In diatomic molecules, the  orbitals (  u 2p x,  u 2p y,  g * 2p x and  g * 2p y ) molecular orbitals constructed by the 2p x and 2p y AOs are degenerate in energy. They are often collectively labeled as just one set of  orbitals,  u 2p,  g * 2p. How many electrons can be placed into the  u 2p (or the  g * 2p) orbital? (A) The atomic 2p subshell can have 6 electrons. Since we have 2 atoms, we can fill 12 electrons into the  u 2p orbital. (B)Each atomic 2p x and 2p y orbital can carry 2 electrons, making a total of 4 per atom. Therefore, the  u 2p orbital can have 8 electrons. (C) Each atomic 2p x and 2p y orbital can carry 2 electrons, making a total of 4 per atom. Since we have to distribute the orbitals into the bonding  u 2p orbital and the antibonding  g * 2p orbital, the  u 2p orbital and the  g * 2p orbital can take 4 electrons each. (D) The atomic 2p subshell can have 6 electrons per atom. Since we have to distribute the orbitals into the bonding  u 2p orbital and the antibonding  g * 2p orbital, the  u 2p orbital and the  g * 2p orbital can take 6 electrons each.

10. In diatomic molecules, the  orbitals (  u 2p x,  u 2p y,  g * 2p x and  g * 2p y ) molecular orbitals constructed by the 2p x and 2p y AOs are degenerate in energy. They are often collectively labeled as just one set of  orbitals,  u 2p,  g * 2p. How many electrons can be placed into the  u 2p (or the  g * 2p) orbital? (A) The atomic 2p subshell can have 6 electrons. Since we have 2 atoms, we can fill 12 electrons into the  u 2p orbital. (B)Each atomic 2p x and 2p y orbital can carry 2 electrons, making a total of 4 per atom. Therefore, the  u 2p orbital can have 8 electrons. (C) Each atomic 2p x and 2p y orbital can carry 2 electrons, making a total of 4 per atom. Since we have to distribute the orbitals into the bonding  u 2p orbital and the antibonding  g * 2p orbital, the  u 2p orbital and the  g * 2p orbital can take 4 electrons each. (D) The atomic 2p subshell can have 6 electrons per atom. Since we have to distribute the orbitals into the bonding  u 2p orbital and the antibonding  g * 2p orbital, the  u 2p orbital and the  g * 2p orbital can take 6 electrons each.