Energy differences of molecular orbitals

[Helena Wells]

Suppose we have a molecule A-A and a molecule A-B . And we want to compare the differences in energy of the different molecular orbitals for example the 1s antibonding orbital with the 2s bonding orbital.How can we do that?

 

[docnet]

Antibonding orbitals are higher in energy than bonding orbitals. you can construct MO diagrams by following certain rules. at my university the skill is taught in inorganic chemistry

 

[Helena Wells]

Antibonding orbitals are higher in energy than bonding orbitals. you can construct MO diagrams by following certain rules. at my university the skill is taught in inorganic chemistry

I don't think that is true . Are you saying the 1s antibonding orbital has higher energy than the 2s bonding orbital?

 

[docnet]

I don't think that is true . Are you saying the 1s antibonding orbital has higher energy than the 2s bonding orbital?

I was mistaken. Now I don't think the question makes any sense.

 

[docnet]

Here you go. My textbook says 2s-2s bonding orbitals are higher in energy than the 1s-1s antibonding orbitals for homonuclear diatomiicc molecules of the first 10 elements, from H to Ne.