1. The Scientists Light and Waves Quantum Mechanics Atomic Orbitals Electron Configurations 100 200 300 400 500

2. It is my Atomic Theory It is my Atomic Theory answer answer answer

3. John Dalton John Dalton

4. I found a subatomic particle by using a cathode ray I found a subatomic particle by using a cathode ray answer answer answer

5. J.J. Thompson J.J. Thompson

6. Using a sheet of gold, I discovered the nucleus Using a sheet of gold, I discovered the nucleus answer answer answer

7. Ernest Rutherford Ernest Rutherford

8. I found the subatomic particle, the neutron I found the subatomic particle, the neutron answer answer answer

9. James Chadwick James Chadwick

10. I respect Niehls Bohr for finding that electrons go around the atom, but I developed a better model that could be applied to the majority of elements. This model specifies that electrons moved in waves, orbitals, and it also keeps Planck’s idea of the quantum I respect Niehls Bohr for finding that electrons go around the atom, but I developed a better model that could be applied to the majority of elements. This model specifies that electrons moved in waves, orbitals, and it also keeps Planck’s idea of the quantum answer answer answer

11. My model is the Quantum Mechanical Model and I am: My model is the Quantum Mechanical Model and I am: Erwin ShrodingerErwin Shrodinger

12. What is the speed of light? What is the speed of light? answer answer answer

13. 2.9979 x 10 8 m/s 2.9979 x 10 8 m/s

14. What is the distance between two corresponding* parts of a wave called? What is the distance between two corresponding* parts of a wave called? *Corresponding means analogous parts. Ex: from crest to crest, or from trough to trough *Corresponding means analogous parts. Ex: from crest to crest, or from trough to trough answer answer answer

15. Wavelength Wavelength

16. The atomic number = ? The atomic number = ? answer answer answer

17. # of protons # of protons

18. What is the name given to the maximum distance that the particles of a medium move from the rest position? What is the name given to the maximum distance that the particles of a medium move from the rest position? answer answer answer

19. amplitude amplitude

20. 1. Which variable is directly proportional to frequency? a) Wavelength b) Velocity c) Position d) Energy answer answer answer

21. D) Energy D) Energy

22. Calculate the wavelength of a blue light emitted by a mercury lamp with a frequency of 5.10 x 10 14 s -1 Calculate the wavelength of a blue light emitted by a mercury lamp with a frequency of 5.10 x 10 14 s -1 *s -1 is the same unit as Hz or cycles/second *s -1 is the same unit as Hz or cycles/second answer answer answer

23. 5.88 x 10 -7 m 5.88 x 10 -7 m

24. What does the quantum theory say? What does the quantum theory say? answer answer answer

25. Energy travels in discrete units called quanta Energy travels in discrete units called quanta

26. Which quantum number describes the main energy level or shell where an electron is found? (Give both the name and symbol of this number) Which quantum number describes the main energy level or shell where an electron is found? (Give both the name and symbol of this number) answer answer answer

27. The principal quantum number (n) The principal quantum number (n)

28. What does the Pauli exclusion principle state? What does the Pauli exclusion principle state? answer answer answer

29. “ In a given ato no two electrons can have the same set of four quantum numbers” “ In a given ato no two electrons can have the same set of four quantum numbers”

30. True or False True or False With the Quantum Mechanical model with know with a 100% accuracy where an electron is at a certain time.With the Quantum Mechanical model with know with a 100% accuracy where an electron is at a certain time. answer answer answer

31. False False

32. Write down the name for each quantum number and the symbol. Then raise your hand and explain what each quantum number represents. Write down the name for each quantum number and the symbol. Then raise your hand and explain what each quantum number represents. answer answer answer

33. The Principal Quantum Number (n) The Principal Quantum Number (n) Related to the energy shell (size and energy) Related to the energy shell (size and energy) The angular Momentum Number (l) The angular Momentum Number (l) Refers to the sub-shell (or orbital) Refers to the sub-shell (or orbital) The magnetic Quantum Number (m l ) The magnetic Quantum Number (m l ) Refers to the orientation of the orbital in space in relation to other orbitals Refers to the orientation of the orbital in space in relation to other orbitals The electron spin quantum number (m s ) The electron spin quantum number (m s ) Refers to the spin of the electron within the orbital Refers to the spin of the electron within the orbital

34. Which orbital closely resembles a circle but it’s not a circle Which orbital closely resembles a circle but it’s not a circle answer answer answer

35. An s orbital An s orbital

36. If there are p orbitals… up to how many electrons in the shell can come from p orbitals? If there are p orbitals… up to how many electrons in the shell can come from p orbitals? answer answer answer

37. Six electrons. Two in each of the three p orbitals. Six electrons. Two in each of the three p orbitals.

38. If l=2… If l=2… What does n equal to and which orbitals are on that outer shell?What does n equal to and which orbitals are on that outer shell? answer answer answer

39. n=3; there are s, p, and d orbitals n=3; there are s, p, and d orbitals

40. If the last electrons on an atom are 3p3… how many orbitals in total does that atom have? If the last electrons on an atom are 3p3… how many orbitals in total does that atom have? answer answer answer

41. 3s 3s 6p 6p Total of 9 orbitals Total of 9 orbitals

42. In general terms, explain how the quantum mechanical model of the atom describes the electron In general terms, explain how the quantum mechanical model of the atom describes the electron answer answer answer

43. As a tiny particle that we can only estimate its position, without disturbing its path (Heisenberg Uncertainty Principle). As a tiny particle that we can only estimate its position, without disturbing its path (Heisenberg Uncertainty Principle). It can only move up or down in specific increments and it can never be found in between the two positions (Quantum Theory). It can only move up or down in specific increments and it can never be found in between the two positions (Quantum Theory).

44. What is the electron configuration of He? What is the electron configuration of He? answer answer answer

45. 1s 2 1s 2

46. Write both the long and the abbreviated electron configurations of Al Write both the long and the abbreviated electron configurations of Al answer answer answer

47. Long form: 1s 2 2s 2 2p 3s 2 3p 1 Long form: 1s 2 2s 2 2p 3s 2 3p 1 Abbreviated: [Ne] 3s 2 3p 1 Abbreviated: [Ne] 3s 2 3p 1

48. State the aufbau principle in your own words (Not the exact answer in the book) State the aufbau principle in your own words (Not the exact answer in the book) answer answer answer

49. As protons are added one by one to the nucleus to build up the elements, electrons are similarly added to new orbitals As protons are added one by one to the nucleus to build up the elements, electrons are similarly added to new orbitals Electrons enter orbitals of lowest energy first Electrons enter orbitals of lowest energy first

50. State, in your own words, Hund’s rule and who came up with it. State, in your own words, Hund’s rule and who came up with it. answer answer answer

51. “The lowest energy configuration for an atom is the one having the maximum number of unpaired electrons in a set of degenerate orbitals.” “The lowest energy configuration for an atom is the one having the maximum number of unpaired electrons in a set of degenerate orbitals.”

52. Give the electron configuration of In. Give the electron configuration of In. How many valence electrons does an atom of this element have? How many valence electrons does an atom of this element have? answer answer answer

53. [Kr] 5s 2 4d 10 5p 1 [Kr] 5s 2 4d 10 5p 1 Atoms of this element have three valence electrons. Atoms of this element have three valence electrons.