[MrHappy0]

Hello,

I'm embarrassed to say I don't understand this question where I need to find lambda max of the lowest energy optical absorption band of nitrobenzene.

I have to use SciFinder to locate the answer. I figured that the search would be fairly easy but everything article I find containing nitrobenzene is super abstract and has nothing to do with optical absorption by the compound.

[Corribus]

NIST Chemistry Webbook provides a spectrum. Looks like the most intense absorption is around 260 nm.

http://webbook.nist.gov/cgi/cbook.cgi?Name=nitrobenzene&Units=SI