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Chapter 5 Review

Matching
 
 
Match each item with the correct statement below.
a.
atomic orbital
d.
ground state
b.
aufbau principle
e.
Pauli exclusion principle
c.
electron configuration
f.
Heisenberg uncertainty principle
 

 1. 

 region of high probability of finding an electron
 

 2. 

 states the impossibility of knowing both velocity and position of a moving particle at the same time
 

 3. 

 lowest energy level
 

 4. 

 tendency of electrons to enter orbitals of lowest energy first
 

 5. 

 arrangement of electrons around atomic nucleus
 

 6. 

 each orbital has at most two electrons
 
 
Match each item with the correct statement below.
a.
atomic emission spectrum
d.
photon
b.
frequency
e.
quantum
c.
wavelength
f.
spectrum
 

 7. 

 discrete bundle of electromagnetic energy
 

 8. 

 energy needed to move an electron from one energy level to another
 

 9. 

 number of wave cycles passing a point per unit of time
 

 10. 

 distance between wave crests
 

 11. 

 separation of light into different wavelengths
 

 12. 

 frequencies of light emitted by an element
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 13. 
In Bohr's model of the atom, where are the electrons and protons located?
a.
The electrons move around the protons, which are at the center of the atom.
b.
The electrons and protons move throughout the atom.
c.
The electrons occupy fixed positions around the protons, which are at the center of the atom.
d.
The electrons and protons are located throughout the atom, but they are not free to move.
 

 14. 
In the Bohr model of the atom, an electron in an orbit has a fixed ____.
a.
position
c.
energy
b.
color
d.
size
 

 15. 
How does the energy of an electron change when the electron moves closer to the nucleus?
a.
It decreases.
c.
It stays the same.
b.
It increases.
d.
It doubles.
 

 16. 
The principal quantum number indicates what property of an electron?
a.
position
c.
energy level
b.
speed
d.
electron cloud shape
 

 17. 
What is the shape of the 3p atomic orbital?
a.
sphere
c.
bar
b.
dumbbell
d.
two perpendicular dumbbells
 

 18. 
How many energy sublevels are in the second principal energy level?
a.
1
c.
3
b.
2
d.
4
 

 19. 
What is the maximum number of f orbitals in any single energy level in an atom?
a.
1
c.
5
b.
3
d.
7
 

 20. 
What is the maximum number of d orbitals in a principal energy level?
a.
1
c.
3
b.
2
d.
5
 

 21. 
What is the maximum number of orbitals in the p sublevel?
a.
2
c.
4
b.
3
d.
5
 

 22. 
What is the maximum number of electrons in the second principal energy level?
a.
2
c.
18
b.
8
d.
32
 

 23. 
When an electron moves from a lower to a higher energy level, the electron ____.
a.
always doubles its energy
b.
absorbs a continuously variable amount of energy
c.
absorbs a quantum of energy
d.
moves closer to the nucleus
 

 24. 
The shape (not the size) of an electron cloud is determined by the electron's ____.
a.
energy sublevel
c.
speed
b.
position
d.
principal quantum number
 

 25. 
The letter "p" in the symbol 4pmc025-1.jpg indicates the ____.
a.
spin of an electron
c.
principle energy level
b.
orbital shape
d.
speed of an electron
 

 26. 
If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?
a.
zero
c.
counterclockwise
b.
clockwise
d.
both clockwise and counterclockwise
 

 27. 
What types of atomic orbitals are in the third principal energy level?
a.
s and p only
c.
s, p, and d only
b.
p and d only
d.
s, p, d, and f
 

 28. 
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
a.
2d
c.
3f
b.
3d
d.
4s
 

 29. 
According to the aufbau principle, ____.
a.
an orbital may be occupied by only two electrons
b.
electrons in the same orbital must have opposite spins
c.
electrons enter orbitals of highest energy first
d.
electrons enter orbitals of lowest energy first
 

 30. 
What is the number of electrons in the outermost energy level of an oxygen atom?
a.
2
c.
6
b.
4
d.
8
 

 31. 
What is the electron configuration of potassium?
a.
1smc031-1.jpg2smc031-2.jpg2pmc031-3.jpg3smc031-4.jpg3pmc031-5.jpg4smc031-6.jpg
c.
1smc031-12.jpg2smc031-13.jpg3smc031-14.jpg3pmc031-15.jpg3dmc031-16.jpg
b.
1smc031-7.jpg2smc031-8.jpg2pmc031-9.jpg3smc031-10.jpg3pmc031-11.jpg
d.
1smc031-17.jpg2smc031-18.jpg2pmc031-19.jpg3smc031-20.jpg3pmc031-21.jpg4smc031-22.jpg
 

 32. 
If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals?
a.
one electron in each orbital
b.
two electrons in one orbital, one in another, none in the third
c.
three in one orbital, none in the other two
d.
Three electrons cannot fill three empty 2p atomic orbitals.
 

 33. 
How many unpaired electrons are in a sulfur atom (atomic number 16)?
a.
0
c.
2
b.
1
d.
3
 

 34. 
How many half-filled orbitals are in a bromine atom?
a.
1
c.
3
b.
2
d.
4
 

 35. 
Stable electron configurations are likely to contain ____.
a.
filled energy sublevels
b.
fewer electrons than unstable configurations
c.
unfilled s orbitals
d.
electrons with a clockwise spin
 

 36. 
What is the basis for exceptions to the aufbau diagram?
a.
Filled and half-filled energy sublevels are more stable than partially-filled energy sublevels.
b.
Electron configurations are only probable.
c.
Electron spins are more important than energy levels in determining electron configuration.
d.
Some elements have unusual atomic orbitals.
 

 37. 
Which electron configuration of the 4f energy sublevel is the most stable?
a.
4fmc037-1.jpg
c.
4fmc037-2.jpg
b.
4f
d.
4fmc037-3.jpg
 

 38. 
Which of the following electron configurations of outer sublevels is the most stable?
a.
4dmc038-1.jpg5smc038-2.jpg
c.
4dmc038-5.jpg5smc038-6.jpg
b.
4dmc038-3.jpg5smc038-4.jpg
d.
4dmc038-7.jpg5smc038-8.jpg
 

 39. 
How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum?
a.
The speed of visible light is greater.
b.
The speed of gamma rays is greater.
c.
The speeds are the same.
d.
No answer can be determined from the information given.
 

 40. 
Which color of visible light has the shortest wavelength?
a.
yellow
c.
blue
b.
green
d.
violet
 

 41. 
Which of the following electromagnetic waves have the highest frequencies?
a.
ultraviolet light waves
c.
microwaves
b.
X-rays
d.
gamma rays
 

 42. 
Which type of electromagnetic radiation includes the wavelength 10mc042-1.jpg m?
a.
gamma ray
c.
radio wave
b.
microwave
d.
visible light
 

 43. 
How are the frequency and wavelength of light related?
a.
They are inversely proportional to each other.
b.
Frequency equals wavelength divided by the speed of light.
c.
Wavelength is determined by dividing frequency by the speed of light.
d.
They are directly proportional to each other.
 

 44. 
What is the wavelength of an electromagnetic wave that travels at 3 mc044-1.jpg 10mc044-2.jpg m/s and has a frequency of 60 MHz? (1 MHz = 1,000,000 Hz)
a.
mc044-3.jpg
b.
60 MHz ´ 300,000,000 m/s
c.
mc044-4.jpg
d.
No answer can be determined from the information given.
 

 45. 
The light given off by an electric discharge through sodium vapor is ____.
a.
a continuous spectrum
c.
of a single wavelength
b.
an emission spectrum
d.
white light
 

 46. 
Emission of light from an atom occurs when an electron ____.
a.
drops from a higher to a lower energy level
b.
jumps from a lower to a higher energy level
c.
moves within its atomic orbital
d.
falls into the nucleus
 

 47. 
As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit ____.
a.
increase
c.
remain the same
b.
decrease
d.
cannot be determined
 

 48. 
The atomic emission spectra of a sodium atom on Earth and of a sodium atom in the sun would be ____.
a.
the same
b.
different from each other
c.
the same as those of several other elements
d.
the same as each other only in the ultraviolet range
 

 49. 
What is the approximate energy of a photon having a frequency of 4 mc049-1.jpg 10mc049-2.jpg Hz? (h = 6.6 mc049-3.jpg 10mc049-4.jpg Jmc049-5.jpgs)
a.
3 mc049-6.jpg 10mc049-7.jpg J
c.
2 mc049-10.jpg 10mc049-11.jpg J
b.
3 mc049-8.jpg 10mc049-9.jpg J
d.
3 mc049-12.jpg 10mc049-13.jpg J
 

 50. 
What is the approximate frequency of a photon having an energy 5 mc050-1.jpg 10mc050-2.jpg J? (h = 6.6 mc050-3.jpg 10mc050-4.jpg Jmc050-5.jpgs)
a.
8 mc050-6.jpg 10mc050-7.jpg Hz
c.
3 mc050-10.jpg 10mc050-11.jpg Hz
b.
3 mc050-8.jpg 10mc050-9.jpg Hz
d.
1 mc050-12.jpg 10mc050-13.jpg Hz
 

 51. 
Which of the following quantum leaps would be associated with the greatest energy of emitted light?
a.
n = 5 to n = 1
c.
n = 2 to n = 5
b.
n = 4 to n = 5
d.
n = 5 to n = 4
 

 52. 
Which variable is directly proportional to frequency?
a.
wavelength
c.
position
b.
velocity
d.
energy
 

 53. 
How do the energy differences between the higher energy levels of an atom compare with the energy differences between the lower energy levels of the atom?
a.
They are greater in magnitude than those between lower energy levels.
b.
They are smaller in magnitude than those between lower energy levels.
c.
There is no significant difference in the magnitudes of these differences.
d.
No answer can be determined from the information given.
 

 54. 
What are quanta of light called?
a.
charms
c.
muons
b.
excitons
d.
photons
 

 55. 
Which scientist developed the quantum mechanical model of the atom?
a.
Albert Einstein
c.
Niels Bohr
b.
Erwin Schrodinger
d.
Ernest Rutherford
 

 56. 
Bohr's model could only explain the spectra of which type of atoms?
a.
single atoms with one electron
b.
bonded atoms with one electron
c.
single atoms with more than one electron
d.
bonded atoms with more than one electron
 

 57. 
The quantum mechanical model of the atom ____.
a.
defines the exact path of an electron around the nucleus
b.
was proposed by Niels Bohr
c.
involves the probability of finding an electron in a certain position
d.
has many analogies in the visible world
 

 58. 
Who predicted that all matter can behave as waves as well as particles?
a.
Albert Einstein
c.
Max Planck
b.
Erwin Schrodinger
d.
Louis de Broglie
 

 59. 
According to the Heisenberg uncertainty principle, if the position of a moving particle is known, what other quantity CANNOT be known?
a.
mass
c.
spin
b.
charge
d.
velocity
 

 60. 
How can the position of a particle be determined?
a.
by analyzing its interactions with another particle
b.
by measuring its velocity
c.
by measuring its mass
d.
by determining its charge
 

 61. 
The wavelike properties of electrons are useful in ____.
a.
defining photons
b.
writing electron configurations
c.
magnifying objects
d.
determining the velocity and position of a particle
 

 62. 
In an s orbital, the probability of finding an electron a particular distance from the nucleus does NOT depend on ____.
a.
a quantum mechanical model
c.
the Schrodinger equation
b.
direction with respect to the nucleus
d.
the electron energy sublevel
 

Short Answer
 

 63. 
Give the electron configuration for a neutral atom of beryllium.
 

 64. 
Give the electron configuration for a neutral atom of chlorine.
 

 65. 
Give the electron configuration for a neutral atom of selenium.
 

 66. 
Write the electron configuration for chromium.
 

 67. 
What is the frequency of ultraviolet light with wavelength 2.94 sa067-1.jpg 10sa067-2.jpg m? (c = 3.00 sa067-3.jpg 10sa067-4.jpg m/s)
 

 68. 
What is the wavelength of gamma ray electromagnetic radiation with a frequency of 2.73 sa068-1.jpg 10sa068-2.jpg Hz? (c = 3.00 sa068-3.jpg 10sa068-4.jpg m/s)
 

 69. 
What is the frequency of a radar photon with energy 6.80 sa069-1.jpg 10sa069-2.jpg J? (h = 6.63 sa069-3.jpg 10sa069-4.jpg Jsa069-5.jpgs)
 

 70. 
What is the energy of a microwave photon that has a frequency of 1.12 sa070-1.jpg 10sa070-2.jpg Hz? (h = 6.63 sa070-3.jpg 10sa070-4.jpg Jsa070-5.jpgs)
 

Numeric Response
 

 71. 
How many electrons are in the highest occupied energy level of a neutral chlorine atom?

 

 72. 
How many electrons are in the highest occupied energy level of a neutral strontium atom?

 

 73. 
How many electrons are in the highest occupied energy level of copper?

 

Essay
 

 74. 
Explain why the 4s sublevel fills before the 3d sublevel begins to fill as electrons are added.
 

 75. 
What is the explanation for the discrete lines in atomic emission spectra?
 

 76. 
Why are you unable to observe the wavelike motion of a soccer ball as it is kicked toward a goal?
 

 77. 
What is the quantum mechanical model?
 

 78. 
Explain what is meant by the Heisenberg uncertainty principle.
 



 
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