Math Tune-Up: Atomic Emission Spectra and PhotonsTUTORMATH
152 Chapter 5 • Assessment5Assessment * Solutions appear in Appendix EPROBLEMSONLINELesson by Lesson5.1 Revising the Atomic ModelWhy was Rutherford’s model of the atom 27. known as the planetary model?28. What did Bohr assume about the motion of electrons?Describe Rutherford’s model of the atom and 29. compare it with the model proposed by his student Niels Bohr.30. What is the significance of the boundary of an electron cloud?What is an atomic orbital?31. Sketch 132. s, 2s, and 2porbitals using the same scale for each.33. How many orbitals are in the 2psublevel?34. How many sublevels are contained in each of these principal energy levels?na. ý1 c. ný3b. ý2 d. ný4n5.2 Electron Arrangement in Atoms35. What are the three rules that govern the filling of atomic orbitals by electrons?36. Arrange the following sublevels in order of increasing energy: 3d, 2s, 4s, 3p.37. Which of these orbital designations are invalid?42What is the maximum number of electrons that 38. can go into each of the following sublevels?2a. se. 3p4b. sf. 3d4c. pg. 5s4d. fh. 5p39. What is meant by 3p3?Write electron configurations for the elements 40. that are identified by these atomic numbers:7 9 Give electron configurations for atoms of these 41. elements:Na a. c. IK b. d. Ne42. How many electrons are in the highest occupied energy level of these atoms?barium aluminum How many electrons are in the second energy 43. level of an atom of each element?chlorinea. phosphorusb. potassiumc. 44. Write electron configurations for atoms of these elements:selenium a. c. vanadiumb. d. calciumtitanium 5.3 Atomic Emission Spectra and the Quantum Mechanical ModelUse a diagram to illustrate each term for a wave.45. wavelengtha. amplitudeb. cyclec. What is meant by the frequency of a wave? 46. What are the units of frequency? Describe the relationship between frequency and wavelength.47. Consider the following regions of the electro-magnetic spectrum: (i) ultraviolet, (ii) X-ray, (iii) visible, (iv) infrared, (v) radio wave, (vi) microwave.Use Figure 5.8 to arrange them in order of a. decreasing wavelength.How does this order differ from that of b. decreasing frequency?List the colors of the visible spectrum in order 48. of increasing wavelength.How did Planck influence the development of 49. modern atomic theory?50. Explain the difference between a photon and a quantum.51. What has more energy, a photon of infrared light or a photon of ultraviolet light?*************
Electrons in Atoms 15352. What is the energy of a photon of green light with a frequency of 5.80 1014/s?53. Explain the difference between the energy lost or gained by an atom according to the laws of classical physics and according to the quantum model of the atom.