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Electron Configuration Review Flashcards | StudBud
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Electron Configuration Review
Electron Configuration Review
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A review for chapter 4.
Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
The statement that an electron in an orbital occupies the lowest available energy orbital is
Hund's rule
the Pauli exclusion principle
the Aufbau principle
Bohr's law
2
Max Planck proposed that "hot" objects radiate energy in small, specific amounts called
hertz
waves
quanta
electrons
3
The distance between two successive peaks on adjacent waves is its
quantum number
frequency
velocity
wavelength
4
Who predicted that all matter can behave as waves as well as particles?
Planck
Schrodinger
de Broglie
Einstein
5
How many quantum numbers are needed to describe the energy state of an electron in an atom?
2
3
4
1
6
What is the electron configuration for nitrogen, atomic number 7?
1s22s22p3
1s22s22p23s1
1s22s32p2
1s22s32p1
7
The
p
orbitals are shaped like
peanuts
flowers
spheres
double peanuts
8
Emission of light from an atom occurs when an electron ______.
moves within its atomic orbital
drops from a higher to a lower energy level
falls into the nucleus
jumps from a lower to a higher energy level
9
Certain kinds of light cannot eject electrons from metals because
the mass is too low
the energy is too low
the wavelength is too short
the frequency is too high
10
Which variable is directly proportional to frequency?
wavelength
velocity
position
energy
11
A quantum of electromagnetic energy is called a(n)
photon
orbital
electron
excited atom
12
Which of the following electromagnetic waves have the highest frequencies?
ultraviolet light waves
gamma rays
microwaves
X-rays
13
Which is NOT a quantum number?
angular momentum quantum number
magnetic quantum number
spin quantum number
orbital quantum number
14
The electron notation for aluminum (atomic number 13) is
1s22s22p33s23p33d1
1s22s22p63s23d1
1s22s22p63s23p1
1s22s22p9
15
The wave model of light does not explain
the frequency of light
the photoelectric effect
the continuous spectrum
interference
16
The electron configuration shown represents an atom of which element?
selenium
oxygen
silicon
sulfur
17
Which is a wave property that electrons possess?
absorption
diffraction
emission
radiation
18
A three-dimensional region around a nucleus where an electron may be found is called a(n)
electron path
orbital
spectral line
orbit
19
What is the frequency of light whose wavelength is 633 nm? (1 m = 1x10
9
nm)
4.74x1014 Hz
4.74x1016 Hz
4.74x10-4 Hz
4.74x10-2 Hz
20
When EMR strikes the surface of a metal, electrons are ejected from the metal describes the
quantum theory
effects of diffraction
Aufbau principle
photoelectric effect
21
Is this the correct orbital notation for phosphorus?
no
yes
22
The quantum number that indicates the orientation of an orbital relative to the nucleus is the
magnetic quantum number
principal quantum number
spin quantum number
angular momentum quantum number
23
The angular momentum quantum number indicates the
main energy level of an orbital
direction of the spin of the electron in its orbital
orientation of an orbital about the nucleus
shape of an orbital
24
What is the maximum number of electrons that a single orbital can hold?
3
4
2
1
25
How does the speed of visible light compare with the speed of gamma rays?
No answer can be determined from the information given.
The speed of gamma rays is greater.
The speed of visible light is greater.
The speeds are the same.
26
For an electron in an atom to change from the ground state to an excited state,
the electron must make a transition from a higher state
radiation must be emitted
energy must be absorbed
energy must be released
27
According to the quantum theory of an atom, in an orbital
an electron has no energy
electrons cannot be found
an electron's position cannot be known precisely
electrons travel around the nucleus at specific radii
28
According to the Heisenberg uncertainty principle, if position is known, what cannot be known?
spin
velocity
charge
mass
29
The lowest energy state of an atom is its
ground state
principle quantum number
electron configuration
highest-occupied energy level
30
The energy of a photon is related to its
mass
size
speed
frequency
31
Which mathematically describes the wave properties of electrons?
the Rutherford model of the atom
the Bohr model of the atom
atomic theory
quantum theory
32
If 3 electrons are available to fill the orbitals shown, how will they be distributed?
Three electrons in one and the other two empty.
Two electrons in one, one in another and the third empty.
Three electrons cannot fill 3 empty 2p orbitals.
One electron in each orbital.
33
The diagram represents two electrons with
different energies
the same energy
opposite spin states
the same spin state
34
The statement that no two electrons in the same atom can have the same four quantum numbers is
the Aufbau principle
Hund's rule
The Pauli exclusion principle
Bohr's law
35
When an atom in an excited state emits a photon, the energy of the photon is equal to the
energy of the atom's final state.
energy of the atom's excited state.
total energy of the atom's final state and excited state.
difference between the atom's excited state and final state.
36
The quantum mechanical model of the atom ______.
was proposed by Niels Bohr
defines the exact path of an electron around the nucleus
has many analogies in the visible world
is the probability of finding an electron in a position
37
What is the correct noble gas notation for chlorine, atomic number 17?
[Ne]3s23p4
[Ar]3s23p5
[Ar]3s23p4
[Ne]3s23p5
38
The principal quantum number indicated what property of an electron?
speed
energy level
position
orbital shape
39
If the spin of one electron in an orbital is clockwise, what is the spin of the other one?
counterclockwise
clockwise
both clockwise and counterclockwise
zero
40
The element with electron configuration 1s
2
2s
2
2p
6
3s
2
3p
2
is
S
Si
Mg
C
