The bright-line emission spectrum of an element can best be explålhe (1) electrons transitioning between discrete energy levels in the atoms of that element. (2) protons being dispersed uniformly throughout the atoms of that element. (3) protons acting as both particles and waves. (4) electrons being located in the nucleus. 13) _14) White light is passed through a cloud of cool hydrogen gas and then examined with a spectroscope. The dark lines observed on a bright background are caused by (1) the hydrogen emitting all frequencies in white light. (2) the hydrogen absorbing certain frequencies of white light. (3) diffraction of the white light. (4) constructive interference. How much energy is required to move an electron in a mercury atom from the ground state to energy level h? (1) 8.81 eV (2) 1.57 eV 15) (3) 10.38 eV (4) 11.95 eV

The bright-line emission spectrum of an element can best be explålhe (1) electrons transitioning between discrete energy levels in the atoms of that element. (2) protons being dispersed uniformly throughout the atoms of that element. (3) protons acting as both particles and waves. (4) electrons being located in the nucleus. 13) _14) White light is passed through a cloud of cool hydrogen gas and then examined with a spectroscope. The dark lines observed on a bright background are caused by (1) the hydrogen emitting all frequencies in white light. (2) the hydrogen absorbing certain frequencies of white light. (3) diffraction of the white light. (4) constructive interference. How much energy is required to move an electron in a mercury atom from the ground state to energy level h? (1) 8.81 eV (2) 1.57 eV 15) (3) 10.38 eV (4) 11.95 eV