Question 6 (1 point) The wavelength associated with the motion of a particle possessing a specific momentum is known as the particle's: O Planck wavelength OHelmholtz wavelength De Broglie wavelength OEinstein wavelength Question 7 (1 point) Which of the following statements about the atomic orbits of electrons is true: electrons orbit the nuclei of the atoms as waves hence they do not have mass )electrons orbit the nuclei of atoms much like planets orbit stars electrons orbit the nuclei of atoms at certain energy levels )electrons orbit the nuclei of atoms as particles hence they do have massQuestion 20 (2 points) Calculate the de Broglie wavelength of a neutron moving at (8.8x10^5) m/s. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units Add attachments to support your work Question 21 (2 points) The wavelength of light incident on a clean metal surface is slowly decreased. The emission of electrons from the metal first occurs at a wavelength of 295 nm. Use the table to identify the metal. Metal Work Function Aluminum 6.73 x 10-19 ] Copper 8.17 x 10-19 ] Platinum 9.04 x 10-19 ] Silver 7.43 x 10-19 ] Aluminum O Platinum O Silver