Step1 First compound has 2 double bonds ; Second compound has 5 double bonds; Third compound has 1 double bond. Step2 Second molecule requires maximum energy due to 5 double bonds.This is likely to to have UV/ Visible absorption. Solution Step1 First compound has 2 double bonds ; Second compound has 5 double bonds; Third compound has 1 double bond. Step2 Second molecule requires maximum energy due to 5 double bonds.This is likely to to have UV/ Visible absorption..