Chapter 5 Review Sheet Name ____________________________________
_____ 1. hertz
_____ 2. quantum of energy
_____ 3. spectrum
_____ 4. energy level
_____ 5. atomic orbital
_____ 6. amplitude
_____ 7. wavelength
_____ 8. atomic emission spectrum
_____ 9. Aufbau principle
_____ 10. frequency
_____ 11. ground state
_____ 12. photon
_____ 13. Heisenberg uncertainty principle
_____ 14. Planck's constant
_____ 15. de Broglie's equation
A. electrons enter orbitals of lowest energy first
B. a range of colors seen when light passes through a prism
C. lines of colored light obtained by passing the light emitted by an element through a prism
D. the region around an atomic nucleus where electrons are likely to be moving
E. the SI unit of frequency
F. the number of wave cycles to pass a given point per unit of time
G. a region in space where there is a high probability of finding an electron
H. the amount of energy required to move an electron from one energy level to the next higher one
J. the distance between crests of waves
K. 6.6262 x 10-34 J s
L. It is impossible to know both the velocity and the position of a particle at the same time.
M. predicts that all matter exhibits wavelike motions
N. the lowest energy level
O. a process in which electrons are ejected by metals when light shines on them
P. light quantum
Answer the following questions or solve the following problems in the space provided.
16. For each group of sublevels, circle the one that fills last as electrons are added?
a. 3p 2p 1s 2s 3s b. 4p 3p 2p 4s 4d 5s c. 3d 4s 3p 3s 2s
17. What is the maximum number of electrons in the:
a. 1s orbital b. 3d orbital c. 4p orbital
16. Write the electron configuration for the potassium atom.
17. Write the electron configuration for the antimony (Sb) atom.
18. Write the electron configuration for the magnesium atom.
19. Write the electron configuration for the molybdenum atom.
20. What is the element with the electron configuration: 1s2 2s2 2p6 3s2 3p6 3d7 4s2
21. What is the frequency of radiation that has a wavelength of 4.7 x 10-5 cm ?
21. Calculate the wavelength of a photon of blue light whose frequency is 6.3 x 1014 s-1 .
22. Find the wavelength of each of these transitions in the hydrogen atom.
23. An inexpensive laser that is available to the public emits light that has a wavelength of 670 nm. What is frequency of the radiation?
Classify each of these statements as always true, AT; sometimes true, ST; or never true, NT.
_____ 24. Electrons must have a certain minimum amount of energy called a quantum in order to move from one energy level to the next higher energy level.
_____ 25. The electron probability clouds for atomic orbitals are spherical in shape.
_____ 26. The maximum number of electrons that can occupy the fourth principal energy level of an atom is 32.
_____ 27. The higher the energy level occupied by an electron the more energetic it is.
_____ 28. The principal quantum number equals the number of sublevels within that principal energy level.
_____ 29. The orbitals of a principal energy level are lower in energy than the orbitals in the next higher principal energy level.
_____ 30. The configuration 3d44s2 is more stable than the configuration 3d54s1.
_____ 31. As many as four electrons can occupy the same orbital.
_____ 32. The Pauli exclusion principle states that an atomic orbital may describe at most two electrons.
_____ 33. The electron configuration for potassium is 1s22s22p63s23p64s1.
_____ 34. The electron configuration for copper is 1s22s22p63s23p64s23d9.
_____ 35. The speed of light is a constant that can be obtained by dividing the frequency of light by its wavelength.
_____ 36. The amplitude of a wave is the distance between the crests.
_____ 37. The energy of a body can change only in small discrete units.
_____ 38. The position and velocity of an electron in an atom can be determined with great certainty.
_____ 39. The photoelectric effect will occur no matter what frequency of light strikes a metal.
Do the Standardized Test Prep on page 153