The law of conservation of matter states that whenever matter undergoes a physical or chemical change, a. atoms can be created by reactions between organic compounds b. atoms can be created c. atoms can be destroyed if we compost them d atoms can be destroyed e. atoms cannot be created or destroyed

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?