In the following table, all the columns for the element nitrogen are filled out correctly.
element electron structure of atom electron structure of lon net lon charge
nitrogen 152, 252, 2p3
sở,2s2, 2p6
true
false

Which statement justifies that phosphine (ph3) is a polar molecule?

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?

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above