10. In a certain experiment, hydrogen (H2) molecules in their ground state are irradiated with ultraviolet photons of a

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10 In A Certain Experiment Hydrogen H2 Molecules In Their Ground State Are Irradiated With Ultraviolet Photons Of A 1 (308.31 KiB) Viewed 34 times

10. In a certain experiment, hydrogen (H2) molecules in their ground state are irradiated with ultraviolet photons of a given energy. It is found that single photons are sufficiently energetic to cause the two hydrogen atoms in the molecule to dissociate and to give each atom a speed of 18 km/s as they fly away from each other. Which value below is closest to the energy of a photon at the wavelength used? The mass of a hydrogen atom is 1.7 x 10-27kg, and a plot of potential energy versus the separation x of the two atoms is given below. You may assume that the ground state energy equals the minimum potential energy to a good approximation. Energy (X 10-19 J) A. 5.5 X 10-19 J 8 B. 7.0 x 10-19 ) a C. 6.5 x 10-19 4 D. 1.3 x 10-18 ] 0 E. 9.8 x 10-19 J -4