1. Devoted fans of the original Star Trek know that the propulsive power for the Starship Enterprise involved something called "dilithium crystals." In fact, dilithium, Liz, can be observed in the gas phase. Draw a molecular orbital energy diagram for Li2, including molecular orbitals derived from both 1s and 2s atomic orbitals. What would the bond order be for dilithium? Can this structure be depicted with a Lewis dot structure? Why would we normally not accept this Lewis dot structure?