Quantum Chemistry 10.8 - LCAO-MO Theory (Old Version)

great video

For the last one, is that antibonding suppose to be pi u and bonding is pi g. !?!

How does this account for different internuclear distances (R) among molecules. If 1s is a function of R, then R should be different for all of the diatomic? Then can you even calculate R from MO?