Question 1

Which of the following is diamagnetic both in its ground state and in all of its excited states?

Accepted Answer

A) Mg 
B) Ne 
C) Cu 
D) Zn 
E) none of these 
A) Mg 
B) Ne 
C) Cu 
D) Zn 
E) none of these

Question 2

What is the binding energy (in J/mol or kJ/mol)of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 1014 /s?

Accepted Answer

A) 2.75 × 10-43 J/mol 
B) 1.66 × 10-19 J/mol 
C) 1.20 × 10-6 J/mol 
D) 99.7 kJ/mol 
E) 7.22 × 1017 kJ/mol 
A) 2.75 × 10-43 J/mol 
B) 1.66 × 10-19 J/mol 
C) 1.20 × 10-6 J/mol 
D) 99.7 kJ/mol 
E) 7.22 × 1017 kJ/mol

Question 3

Which one of the following sets of quantum numbers represents an electron with the highest energy?

Accepted Answer

A) n = 3, l = 2, ml = -2, ms = +1/2 
B) n = 4, l = 1, ml = 0, ms = -1/2 
C) n = 4, l = 0, ml = 0, ms = +1/2 
D) n = 5, l = 0, ml = 0, ms = +1/2 
E) n = 4, l = 2, ml = -1, ms = -1/2 
A) n = 3, l = 2, ml = -2, ms = +1/2 
B) n = 4, l = 1, ml = 0, ms = -1/2 
C) n = 4, l = 0, ml = 0, ms = +1/2 
D) n = 5, l = 0, ml = 0, ms = +1/2 
E) n = 4, l = 2, ml = -1, ms = -1/2

Question 4

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga)in its ground state is

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 5

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

Accepted Answer

The answer of The colors of the visible spectrum are...

Question 6

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2).

Accepted Answer

A) 1.82 × 10-19 /s 
B) 9.13 × 1013 /s 
C) 2.74 × 1014/s 
D) 3.65 × 1014 /s 
E) 1.64 × 1015 /s 
A) 1.82 × 10-19 /s 
B) 9.13 × 1013 /s 
C) 2.74 × 1014/s 
D) 3.65 × 1014 /s 
E) 1.64 × 1015 /s

Question 7

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

Accepted Answer

A) C 
B) N 
C) O 
D) Ti 
E) Cr 
A) C 
B) N 
C) O 
D) Ti 
E) Cr

Question 8

Which of the following electronic transitions is consistent with a decrease in energy?

Accepted Answer

A) From a 5s subshell to a 4d subshell 
B) From a 4f subshell to a 5p subshell 
C) From a 6s subshell to a 5d subshell 
D) From a 5s subshell to a 5p subshell 
E) From a 4f subshell to a 6p subshell 
A) From a 5s subshell to a 4d subshell 
B) From a 4f subshell to a 5p subshell 
C) From a 6s subshell to a 5d subshell 
D) From a 5s subshell to a 5p subshell 
E) From a 4f subshell to a 6p subshell

Question 9

What is the energy in joules of one photon of x-ray radiation with a wavelength of 0.120 nm?

Accepted Answer

A) 2.50 x 109 J 
B) 1.66 x 10-24 J 
C) 1.66 x 10-33 J 
D) 2.50 x 1018J 
E) 1.66 x 10-15J 
A) 2.50 x 109 J 
B) 1.66 x 10-24 J 
C) 1.66 x 10-33 J 
D) 2.50 x 1018J 
E) 1.66 x 10-15J

Question 10

The electron configuration of a ground-state vanadium atom is

Accepted Answer

A) [Ar]4s24d3 
B) [Ar]4s24p3 
C) [Ar]4s23d3 
D) [Ar]3d5 
A) [Ar]4s24d3 
B) [Ar]4s24p3 
C) [Ar]4s23d3 
D) [Ar]3d5

Question 11

What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Accepted Answer

The answer of What is the wavelength of a ball...

Question 12

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2)

Accepted Answer

A) 6.8 × 10-18 nm 
B) 0.612 nm 
C) 82.6 nm 
D) 97.2 nm 
E) 365 nm 
A) 6.8 × 10-18 nm 
B) 0.612 nm 
C) 82.6 nm 
D) 97.2 nm 
E) 365 nm

Question 13

Which of the following is the electron configuration of an excited state of an oxygen atom?

Accepted Answer

A) 1s22s22p4 
B) 1s22s22p5 
C) 1s22s22p33s1 
D) 1s22s22p6 
E) 1s22s22p3 
A) 1s22s22p4 
B) 1s22s22p5 
C) 1s22s22p33s1 
D) 1s22s22p6 
E) 1s22s22p3

Question 14

A proton is roughly 1800 times more massive than an electron.If a proton and an electron are traveling at the same speed,

Accepted Answer

A) the wavelength of the photon will be about 1800 times longer than the wavelength of the electron. 
B) the wavelength of the photon will be about   times longer than the wavelength of the electron. 
C) the wavelength of the photon will be roughly equal to the wavelength of the electron. 
D) the wavelength of the electron will be about   times longer than the wavelength of the photon. 
E) the wavelength of the electron will be about 1800 times longer than the wavelength of the photon. 
A) the wavelength of the photon will be about 1800 times longer than the wavelength of the electron. 
B) the wavelength of the photon will be about   times longer than the wavelength of the electron. 
C) the wavelength of the photon will be roughly equal to the wavelength of the electron. 
D) the wavelength of the electron will be about   times longer than the wavelength of the photon. 
E) the wavelength of the electron will be about 1800 times longer than the wavelength of the photon.

Question 15

A possible set of quantum numbers to describe an electron in a 3d subshell is

Accepted Answer

A) n = 3, l = 0, ml = 0 , ms = +1/2 
B) n = 3, l = 1, ml = 0, ms = - 1/2 
C) n = 3, l = 2, ml = 1, ms = +1/2 
D) n = 3, l = 3, ml = 1, ms = - 1/2 
E) n = 2, l = 0, ml = 0, ms = +1/2 
A) n = 3, l = 0, ml = 0 , ms = +1/2 
B) n = 3, l = 1, ml = 0, ms = - 1/2 
C) n = 3, l = 2, ml = 1, ms = +1/2 
D) n = 3, l = 3, ml = 1, ms = - 1/2 
E) n = 2, l = 0, ml = 0, ms = +1/2

Question 16

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 ml = -1

Accepted Answer

A) 18 
B) 6 
C) 3 
D) 2 
E) 1 
A) 18 
B) 6 
C) 3 
D) 2 
E) 1

Question 17

Which of the following frequencies of light has the highest energy?

Accepted Answer

A) 2.5 x 1010 s-1 
B) 7.0 x 1013 s-1 
C) 2.3 x 1014 s-1 
D) 5.0 x 1014 s-1 
E) 1.4 x 1015 s-1 
A) 2.5 x 1010 s-1 
B) 7.0 x 1013 s-1 
C) 2.3 x 1014 s-1 
D) 5.0 x 1014 s-1 
E) 1.4 x 1015 s-1

Question 18

How many orbitals are allowed in a subshell if l = 3?

Accepted Answer

A) 1 
B) 3 
C) 5 
D) 7 
E) 9 
A) 1 
B) 3 
C) 5 
D) 7 
E) 9

Question 19

If a hydrogen atom and a helium atom have the same kinetic energy,

Accepted Answer

A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom. 
A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom.

Question 20

Does an electron gain or lose energy in the transition from a 4d subshell to a 5s subshell?

Accepted Answer

The answer of Does an electron gain or lose energy...

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Which of the following is diamagnetic both in its ground state and in all of its excited states?

What is the binding energy (in J/mol or kJ/mol)of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 1014 /s?

Which one of the following sets of quantum numbers represents an electron with the highest energy?

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga)in its ground state is

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, _______ has the most energy.

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2).

Which of the following atoms is paramagnetic both in its ground state and in all of its excited states?

Which of the following electronic transitions is consistent with a decrease in energy?

What is the energy in joules of one photon of x-ray radiation with a wavelength of 0.120 nm?

The electron configuration of a ground-state vanadium atom is

What is the wavelength of a ball bearing with a mass of 10.0 g, and a velocity of 10.0 cm/s?

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen En = -2.18 × 10-18 J(1/n2)

Which of the following is the electron configuration of an excited state of an oxygen atom?

A proton is roughly 1800 times more massive than an electron.If a proton and an electron are traveling at the same speed,

A possible set of quantum numbers to describe an electron in a 3d subshell is

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 ml = -1

Which of the following frequencies of light has the highest energy?

How many orbitals are allowed in a subshell if l = 3?

If a hydrogen atom and a helium atom have the same kinetic energy,

Does an electron gain or lose energy in the transition from a 4d subshell to a 5s subshell?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

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Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

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What is the binding energy (in J/mol or kJ/mol)of an electron in a metal whose threshold frequency for photoelectrons is 2.50 × 10¹⁴/s?

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 6 to the n = 3 principal energy level.Recall that for hydrogen E_n = -2.18 × 10^-18 J(1/n²).

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level.Recall that for hydrogen E_n = -2.18 × 10^-18 J(1/n²)

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 3 l = 1 m_l = -1