Both ozone, O₃, and oxygen, O₂, absorb UV light in the upper atmosphere. The ozone, however, absorbs slightly longer wavelengths of UV light!wavelengths that would otherwise reach the surface of the planet. 

(a) How can Lewis structures help explain the bonding difference between ozone and oxygen that gives rise to the difference in the absorption wavelength? 

(b) What relationship or relationships between light and energy do you need to know to understand this photochemical application of Lewis structures?