I need number 5

5. (a) Calculate the frequency and energy of a photon of the yellow light that has a wavelength of 630 nanometers (10 points) (b) A beam of light is normally incident to quartz crystal having refractive index (n) of 1.237, Calculate the percentage of light reflected from the quartz surface. (5 points) 6. In the NaCl ionic salt, calculate the force of attraction between the Na and Cl ions in the salt. The atomic numbers of Na and Cl in the periodic table are 11 and 17 respectively. The separation distance (r) between Na and Cl is 8000 nanometers. (15 points) 5. (a) Calculate the frequency and energy of a photon of the yellow light that has a wavelength of 630 nanometers (10 points) (b) A beam of light is normally incident to quartz crystal having refractive index (n) of 1.237, Calculate the percentage of light reflected from the quartz surface. (5 points) 6. In the NaCl ionic salt, calculate the force of attraction between the Na and Cl ions in the salt. The atomic numbers of Na and Cl in the periodic table are 11 and 17 respectively. The separation distance (r) between Na and Cl is 8000 nanometers. (15 points)