Assuming that the electron added to oh is entirely

Question

Please help.

For a neutral OH molecule,

1. Assuming that the electron added to OH is entirely localized in a single atomic orbital on one atom, identify which atom (O or H) is probably accepting the electron, and the n and l quantum numbers of the atomic orbital that is doing so.
2. The electron affinity of OH has been measured to be similar, but slightly more negative than the electron affinity of single O atoms. Explain briefly why the electron affinity is similar but slightly more negative.