Arrangement of Electrons

Which of the following is the electron configuration of a carbon atom?
1. 1s2 2s2
2. 1s2 2s2 2p6 3s2
3. 1s2 2s2 2p2
4. 1s2 2s2 2p5
Which of the following atoms has valence electrons in the 3p subshell?
1. Li
2. P
3. Na
4. C
Which of the following ions has the same electron configuration as neon?
1. K+
2. Na+
3. Ag+
4. Cu+
What do Al, Si, P, and S have in common?
1. They have the same number of valence electrons
2. They have the same molecular weights
3. They have the same number of protons
4. They have the same number of electron shells
When an electron moves from one energy level to a lower energy level,
1. a line spectrum is produced
2. energy is absorbed
3. the charge of the atom becomes negative
4. the charge of the atom becomes positive
When energy is absorbed by an electron,
1. radiation must be emitted
2. the electron must go from a higher to a lower energy level
3. energy must be released
4. it moves from the ground state to an excited state
How many total electrons can a p subshell hold?
1. 3
2. 6
3. 1
4. 2
The 3-demintional region around a nucleus where an electron may be found is called
1. an orbit
2. an orbital
3. a spectral line
4. an electron path
How many orbitals are in the s sublevel?
1. 3
2. 2
3. 6
4. 1
How many orbitals are in the f sublevel?
1. 14
2. 10
3. 7
4. 2
How many total electrons can be in d sublevel?
1. 2
2. 3
3. 6
4. 10
What element has the electron configuration 1s2 2s1?
1. Li
2. Na
3. Be
4. B
What element has the noble gas notation of [Ar] 4s2?
1. K
2. Na
3. Ca
4. Cl
What element has the electron configuration 1s2 2s2 2p4?
1. K
2. O
3. Al
4. C
What element has the noble gas configuration for [Ar] 3d1 4s2?
1. S
2. Na
3. Kr
4. Sc
What sublevel is being filled as you go across the Lanthanoid series of the Periodic Table?
1. 4f
2. 5f
3. 6f
4. 6d
What sublevel is being filled as you go across the Actinoid Series fo the Periodic Table?
1. 5d
2. 5f
3. 6d
4. 7f
What element has the electron configuration [Ne]3s2 3p3?
1. Phosphorous
2. Boron
3. Sodium
4. Vanadium
The quantum number that indicates the position of an orbital about the three axes in space (orientation) is the
1. principle quantum number
2. angular momentum quantum number
3. magnetic quantum number
4. spin quantum number
The spin quantum number of an electron can be thought of as describing
1. the direction of the spin of electrons
2. the number of electrons spinning in an orbital
3. the spin of the orbital
4. whether an electron has a positive or negative charge
A p orbital's shape can best be described as
1. spherical
2. dumbbell shaped
3. doughnut shaped
4. too complicated to describe
What states that an electron occupies the lowest energy level that can receive it?
1. Aufbau principle
2. Pauli Exculsion principle
3. Hund's rule
4. Heisenberg's principle
What underlies the importance of spin quantum numbers?
1. Aufbau principle
2. Pauli Exculsion principle
3. Hund's rule
4. Heisenberg's principle
What states that orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin?
1. Aufbau principle
2. Pauli Exculsion principle
3. Hund's rule
4. Heisenberg's principle
After the 4s subshell is filled, which subshell is next to be filled?
1. 3d
2. 4d
3. 5s
4. 4p
What is the maximum number of electrons any one orbital can hold?
1. 1
2. 2
3. 8
4. 32
The number of waves that pass a specified point in a given amount of time is known as
1. wavelength
2. frequency
3. electromagnetic spectrum
4. line emission spectrum
The distance between cooresponding points on adjacent waves is known as
1. wavelength
2. frequency
3. line-emission spectrum
4. hertz
The minimum amount of energy that can be lost or gained by an atom is known as
1. a wavelength
2. a quantum
3. a photon
4. the EMR spectrum
The scientist that explained the photoelectric effect was
1. Planck
2. Einstein
3. Bohr
4. de Broglie
The scientist who reasoned the particles would act like waves is
1. Planck
2. Schrodinger
3. de Broglie
4. Heisenberg
What are the possible sublevels for the 4th energy level?
1. s
2. s and p
3. s, p, and d
4. s, p, d, and f
How many orbital orientations are possible in the f energy level?
1. 1
2. 3
3. 5
4. 7
What are the two possible values of the spin quantum number?
1. 1 and -1
2. - and +
3. -1/2 and +1/2
4. right and left
What is the highest occupied energy level in He?
1. 1
2. 3
3. 5
4. 7
What is the highest occupied energy level in Sn?
1. 1
2. 3
3. 5
4. 7
What is the atomic number of the element with an electron configuration of 1s2 2s2 2p4?
1. 3
2. 4
3. 8
4. 13
What element has the configuration 1s2 2s2 2p1?
1. boron
2. lithium
3. calcium
4. magnesium
What element has the electron configuration [Ar]3d6 4s1?
1. krypton
2. manganese
3. iron
4. potassium
How many inner-shell electrons does the following configuration indicate: 1s2 2s2 2p6 3s2 3p3?
1. 3
2. 10
3. 12
4. 15
Which letter is used to indicate the angular momentum quantum number?
1. m
2. l
3. n
4. a
Which letter is used to indicate the principle quantum number?
1. m
2. l
3. n
4. a
Which letter is used to represent the magnetic quantum number?
1. m
2. l
3. n
4. a
How many orbitals are possible in the third main energy level?
1. 3
2. 6
3. 9
4. 16
How many orbitals are possible in the fourth main energy level?
1. 1
2. 4
3. 9
4. 16
The scientist who proposed the idea that you can never be absolutely certain of both the location and velocity of an electron at any point in time was
1. Aufbau
2. de Broglie
3. Heisenberg
4. Schrodinger
The scientist who developed an equation that treated electrons in atoms as waves was
1. Aufbau
2. de Broglie
3. Heisenberg
4. Schrodinger
The minimum quantity of energy that can be lost or gained by an atom is known as
1. a quantum
2. a hertz
3. an electron
4. an erg
A packet of energy that exhibits particle-like behavior is known as
1. an erg
2. a photon
3. an electron
4. beta radiation
Frequency and wavelength are
1. directly proportional
2. inversely proportional
3. not related
4. measurments of the same amount of energy

Arrangement of Electrons

Multiple-Choice ExerciseContent © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.

Which of the following is the electron configuration of a carbon atom?

Which of the following atoms has valence electrons in the 3p subshell?

Which of the following ions has the same electron configuration as neon?

What do Al, Si, P, and S have in common?

When an electron moves from one energy level to a lower energy level,

When energy is absorbed by an electron,

How many total electrons can a p subshell hold?

The 3-demintional region around a nucleus where an electron may be found is called

How many orbitals are in the s sublevel?

How many orbitals are in the f sublevel?

How many total electrons can be in d sublevel?

What element has the electron configuration 1s2 2s1?

What element has the noble gas notation of [Ar] 4s2?

What element has the electron configuration 1s2 2s2 2p4?

What element has the noble gas configuration for [Ar] 3d1 4s2?

What sublevel is being filled as you go across the Lanthanoid series of the Periodic Table?

What sublevel is being filled as you go across the Actinoid Series fo the Periodic Table?

What element has the electron configuration [Ne]3s2 3p3?

The quantum number that indicates the position of an orbital about the three axes in space (orientation) is the

The spin quantum number of an electron can be thought of as describing

A p orbital's shape can best be described as

What states that an electron occupies the lowest energy level that can receive it?

What underlies the importance of spin quantum numbers?

What states that orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin?

After the 4s subshell is filled, which subshell is next to be filled?

What is the maximum number of electrons any one orbital can hold?

The number of waves that pass a specified point in a given amount of time is known as

The distance between cooresponding points on adjacent waves is known as

The minimum amount of energy that can be lost or gained by an atom is known as

The scientist that explained the photoelectric effect was

The scientist who reasoned the particles would act like waves is

What are the possible sublevels for the 4th energy level?

How many orbital orientations are possible in the f energy level?

What are the two possible values of the spin quantum number?

What is the highest occupied energy level in He?

What is the highest occupied energy level in Sn?

What is the atomic number of the element with an electron configuration of 1s2 2s2 2p4?

What element has the configuration 1s2 2s2 2p1?

What element has the electron configuration [Ar]3d6 4s1?

How many inner-shell electrons does the following configuration indicate: 1s2 2s2 2p6 3s2 3p3?

Which letter is used to indicate the angular momentum quantum number?

Which letter is used to indicate the principle quantum number?

Which letter is used to represent the magnetic quantum number?

How many orbitals are possible in the third main energy level?

How many orbitals are possible in the fourth main energy level?

The scientist who proposed the idea that you can never be absolutely certain of both the location and velocity of an electron at any point in time was

The scientist who developed an equation that treated electrons in atoms as waves was

The minimum quantity of energy that can be lost or gained by an atom is known as

A packet of energy that exhibits particle-like behavior is known as

Frequency and wavelength are

Multiple-Choice Exercise
Content © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.