Elements in group via (group 16) have similar properties because they all have a. the same number of valance electrons. b. the same number of electrons needed to fill their octet. c. the same number of electrons shells. d. full octets

Explanation for basic character?

What type of electromagnetic radiation has a shorter wavelength than blue light

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?