Simplified. the absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. what is the energy of a photon (in j) that is absorbed by he+ ions, when an electron is excited from the bohr orbit with n = 1 to the n = 8 state? the energy of an electron in the nth level is - bz2 en =- n? where b = 2.18 x 10-18 j and z = charge on