Which property do metalloids share with nonmetals?

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Identify and describe the three ways that mutations affect organisms.

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?