C) Table 2 shows work function, o of three different metals. Photon with a wavelength of 420 nm is incident on each of these metals. Metal Work function, o (ev) Lithium 2.30 Beryllium 3.90 Platinum 6.35 Table 2 i. Calculate the energy of the photon. Give the answer in electron volts. (3 marks) ii. Which of these metals emit photoelectrons in response to the photon? Explain your answer. (2 marks)