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Read Section 2.2. You can click on the Review link to access the section in your eText. An X-ray photon with a wavelength of 0.973nm strikes a surface. The What is the binding energy of the electron in kJ/mol ? [Note that KE=21mv2 and 1 electronvolt (1eV)=1.6021019J.] emitted electron has a kinetic energy of 961eV. Express the binding energy of the electron in kilojoules per mole to three significant figures X Incorrect; Try Again; 19 attempts remaining The binding energy of an electron is calculated from both the energy of the emitted photon and its kinetic energy. First, calculate the energy of a photon ( Ephoton) ) with a wavelength of 0.973nm. Then, calculate the binding energy, BE, as the difference between the energy of the incident photon, Ephoton, and the kinetic energy of the emitted electron. You may want to review Hint 2. Simplify: Calculate the energy of a photon