Which of these atoms has the largest number of neutrons in the nucleus? Check all that apply.
157Dy
162Ho
149Nd
148Eu
159Gd

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

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?