CHROMOPHORE Lambda MAX (nm) STRENGTH
acetylide 177 mediumaldehyde 210 strong
anthracene 252 strong
azido 190 medium
amine 195 weak
benzene 184 strong
disulfide 194 medium
ether 185 weak
ethylene 190 medium
ketone 190 weak
naphthalane 220 strong
nitrate 270 weak-strong
nitrite 225 weak
nitro 210 strong
oxime 190 medium
thiol 195 weak
thioketone 205 strong
thioether 194 medium
conjugated ring varies strong
Note: Chromophore conjugation is the process that gives rise to multiple spectral peaks (or shoulders) which are very useful in identification for HPLC. For more information on this topic, I recommend a very well written description of UV/VIS spectroscopy fundamentals at this link.