Question

how to identify homo and lumo ​

Answer 1

Answer:

So what that means is that our HOMO orbital is pi 1, so we would say that the HOMO contains two electrons, it's pi 1 and that means that my LUMO orbital is pi 2 and has zero electrons, that's it, so HOMO is the highest one that still has electrons, which in this case it's the only one, because it's the only one that exists and LUMO has no electrons in it and it's the lower energy state, but since there's only two it just happens to be the only one that doesn't have electrons, as you molecules get bigger and the number of molecular orbitals increases, finding HOMO, LUMO will be on that, basically the cusp of where the electrons end and where the unfilled orbitals begin, so let's go ahead and try out a practice problem.

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