Why does sulfur have a higher melting point than phosphorus

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Give more examples of this type of heat transfer:

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?