Ch

Chapter 6: Homework 9. Answer the following questions a. Calculate the energy of a photon of electromagnetic radiation whose frequency is 8.95x10 10 s -1 b. Calculate the energy of a photon of radiation whose wavelength is 626 nm c. What wavelength of radiation has photons of energy 4.75x10 -19 J? More book problems: 17, 19, 23, 25 ; sample exercises 6.2, 6.3 6.3 and 6.4 Bohr’s Model; Matter Waves 10. (6.43 Brown) Use the de Broglie relationship to determine the wavelengths of the following objects (HINT: watch your units; 1J=1kg*m 2 /s 2 ) a. An 85 kg person skiing at 50.0 km/hr b. A 10.0g bullet fired at 250 m/s c. A lithium atom moving at 2.5x10 5 m/s (Hint: need to use molar mass of Li) d. An ozone (O 3 ) molecule in the upper atmosphere moving at 550 m/s More book problems: sample exercise 6.5 6.5 and 6.6 Quantum Mechanics and Atomic Orbitals 11. (6. 51 Brown) a. For n=4, what are the possible values if l? b. For l=2, what are the possible values of m l ? c. If m l is 2, what are the possible values for l? 12. (6.54 Brown) Give the values for n, l, and m l , for a. Each orbital in the 2p subshell b. Each orbital in the 5d subshell 13. Circle each of the following that represent an acceptable set of quantum numbers for an electron in an atom n l m l m s 2 2 -1 -1/2 1 0 0 1/2 3 2 2 3/2 0 0 0 1/2 2 1 -2 -1/2 3 2 0 1/2 n l m l m s 3 2 -1 -1/2 1 0 -1 1/2 3 1 -2 3/2 2 0 0 1/2 2 0 -2 -1/2 3 2 0 1/2 2