Question 1

How many unpaired electrons are there in the ground state of element N?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 2

An electron in a 4p orbital can have a wave function with which of the following set of quantum numbers, (n,l,ml,ms)?

Accepted Answer

A) (4,3,-1,1/2) 
B) (4,1,-1,-1/2) 
C) (5,0,1,-1/2) 
D) (5,1,4,1/2) 
A) (4,3,-1,1/2) 
B) (4,1,-1,-1/2) 
C) (5,0,1,-1/2) 
D) (5,1,4,1/2)

Question 3

Two electromagnetic waves are represented below.  
-Wave (b)has the

Accepted Answer

A) higher frequency and higher energy than wave (a). 
B) higher frequency and lower energy than wave (a). 
C) lower frequency and higher energy than wave (a). 
D) lower frequency and lower energy than wave (a). 
A) higher frequency and higher energy than wave (a). 
B) higher frequency and lower energy than wave (a). 
C) lower frequency and higher energy than wave (a). 
D) lower frequency and lower energy than wave (a).

Question 4

The element Ga has how many valence electrons?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 5

Compared to Si ,Cl has a ________ effective nuclear charge,Zeff,and a ________ atomic radius.

Accepted Answer

Question 6

For the fourth-shell orbital shown below,what are the principal quantum number,n,and the angular momentum quantum number,l?

Accepted Answer

A) n = 4 and l = 0 
B) n = 4 and l = 1 
C) n = 4 and l = 2 
D) n = 4 and l = 3 
A) n = 4 and l = 0 
B) n = 4 and l = 1 
C) n = 4 and l = 2 
D) n = 4 and l = 3

Question 7

For the fourth-shell orbital shown below,what are the principal quantum number,n,and the angular momentum quantum number,l?

Accepted Answer

A) n = 4 and l = 0 
B) n = 4 and l = 1 
C) n = 4 and l = 2 
D) n = 4 and l = 3 
A) n = 4 and l = 0 
B) n = 4 and l = 1 
C) n = 4 and l = 2 
D) n = 4 and l = 3

Question 8

The symbol [Kr] represents

Accepted Answer

A) 4s24p6. 
B) 1s22s22p63s23p64s24p6. 
C) 1s22s22p63s23p63d104s24p6. 
D) 1s22s22p63s23p63d104s24p64d10. 
A) 4s24p6. 
B) 1s22s22p63s23p64s24p6. 
C) 1s22s22p63s23p63d104s24p6. 
D) 1s22s22p63s23p63d104s24p64d10.

Question 9

According to the Balmer-Rydberg equation,electromagnetic radiation with wavelength λ = 486.1 nm will be absorbed when an electron undergoes which of the following transitions?

Accepted Answer

A) m = 2 → n = 3 
B) m = 2 → n = 4 
C) n = 3 → m = 2 
D) n = 4 → m = 2 
A) m = 2 → n = 3 
B) m = 2 → n = 4 
C) n = 3 → m = 2 
D) n = 4 → m = 2

Question 10

The absorption of a photon of wavelength 4.67 × 10-6 m is necessary for a CO molecule to pass from the lowest vibrational energy level to the next highest vibrational level.If this higher vibrational level has an energy of 6.41 × 10-20 J,what is the energy of the lowest vibrational level? (h = 6.626 × 10-34 J ∙ s)

Accepted Answer

A) 1.60 × 10-20 J 
B) 2.15 × 10-20 J 
C) 3.20 × 10-20 J 
D) 4.26 × 10-20 J 
A) 1.60 × 10-20 J 
B) 2.15 × 10-20 J 
C) 3.20 × 10-20 J 
D) 4.26 × 10-20 J

Question 11

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 3d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

Accepted Answer

A) 656.3 nm 
B) 486.2 nm 
C) 364.6 nm 
D) 2.057 × 10-3 nm 
A) 656.3 nm 
B) 486.2 nm 
C) 364.6 nm 
D) 2.057 × 10-3 nm

Question 12

A baseball with a mass of 150 g is moving at a velocity of 40 m/s (90 mph).If the uncertainty in the velocity is 0.1 m/s,the uncertainty in position

Accepted Answer

A) may be zero. 
B) must be less than or equal to 4 × 10-33 m. 
C) must be 4 × 10-33 m. 
D) must be greater than or equal to 4 × 10-33 m. 
A) may be zero. 
B) must be less than or equal to 4 × 10-33 m. 
C) must be 4 × 10-33 m. 
D) must be greater than or equal to 4 × 10-33 m.

Question 13

The highest note on a piano has a frequency of 4186 Hz.In a vacuum 4186 Hz has a corresponding wavelength of ________ m.

Accepted Answer

The answer of The highest note on a piano has...

Question 14

The average bond dissociation energy of a carbon-carbon bond is 410 kJ/mol.What wavelength in nanometers of ultraviolet radiation has an energy of 410 kJ/mol?

Accepted Answer

The answer of The average bond dissociation energy of a...

Question 15

What is the ground-state valence-shell electron configuration of the group of elements indicated by the shaded portion of the periodic table?

Accepted Answer

A) ns2 
B) ns2np2 
C) ns2(n-1)d2 
D) ns2(n-2)f2 
A) ns2 
B) ns2np2 
C) ns2(n-1)d2 
D) ns2(n-2)f2

Question 16

-Which of the above fourth-shell orbitals is a 4dyz orbital?

Accepted Answer

A) orbital (a) 
B) orbital (b) 
C) orbital (c) 
D) orbital (d) 
A) orbital (a) 
B) orbital (b) 
C) orbital (c) 
D) orbital (d)

Question 17

Which of the following does not have the same number of valence electrons?

Accepted Answer

A) O 
B) S 
C) Ca 
D) Po 
A) O 
B) S 
C) Ca 
D) Po

Question 18

Which of the following represent electron configurations that are allowed but do not represent ground-state configurations? (A)[Ne]3s13p5 (B)[Kr]4d125s25p5 (C)[Ar]3d104s24p2

Accepted Answer

A) only (
A)  
B) only (
B)  
C) (
A) and (
B)  
D) (
B) and (
C)  
A) only (
A)  
B) only (
B)  
C) (
A) and (
B)  
D) (
B) and (
C)

Question 19

-Which grouping of elements,indicated by letter on the periodic table above,represents the s-block elements?

Accepted Answer

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

Question 20

In a representation of an orbital,a region having zero probability of finding an electron is called a ________.

Accepted Answer

The answer of In a representation of an orbital,a region...

Exam 5: Periodicity and the Electronic Structure of Atoms

How many unpaired electrons are there in the ground state of element N?

An electron in a 4p orbital can have a wave function with which of the following set of quantum numbers, (n,l,ml,ms)?

Two electromagnetic waves are represented below. -Wave (b)has the

The element Ga has how many valence electrons?

Compared to Si ,Cl has a ________ effective nuclear charge,Zeff,and a ________ atomic radius.

For the fourth-shell orbital shown below,what are the principal quantum number,n,and the angular momentum quantum number,l?

For the fourth-shell orbital shown below,what are the principal quantum number,n,and the angular momentum quantum number,l?

The symbol [Kr] represents

According to the Balmer-Rydberg equation,electromagnetic radiation with wavelength λ = 486.1 nm will be absorbed when an electron undergoes which of the following transitions?

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 3d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

A baseball with a mass of 150 g is moving at a velocity of 40 m/s (90 mph).If the uncertainty in the velocity is 0.1 m/s,the uncertainty in position

The highest note on a piano has a frequency of 4186 Hz.In a vacuum 4186 Hz has a corresponding wavelength of ________ m.

The average bond dissociation energy of a carbon-carbon bond is 410 kJ/mol.What wavelength in nanometers of ultraviolet radiation has an energy of 410 kJ/mol?

What is the ground-state valence-shell electron configuration of the group of elements indicated by the shaded portion of the periodic table?

-Which of the above fourth-shell orbitals is a 4dyz orbital?

Which of the following does not have the same number of valence electrons?

Which of the following represent electron configurations that are allowed but do not represent ground-state configurations? (A)[Ne]3s13p5 (B)[Kr]4d125s25p5 (C)[Ar]3d104s24p2

-Which grouping of elements,indicated by letter on the periodic table above,represents the s-block elements?

In a representation of an orbital,a region having zero probability of finding an electron is called a ________.

Chemical Tools: Experimentation and Measurement

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Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

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Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

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Transition Elements and Coordination Chemistry

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An electron in a 4p orbital can have a wave function with which of the following set of quantum numbers, (n,l,m_l,m_s)?

Compared to Si ,Cl has a ________ effective nuclear charge,Z_eff,and a ________ atomic radius.

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 3d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10^-2 nm^-1.

-Which of the above fourth-shell orbitals is a 4d_yz orbital?

Which of the following represent electron configurations that are allowed but do not represent ground-state configurations? (A)[Ne]3s¹3p⁵ (B)[Kr]4d¹²5s²5p⁵ (C)[Ar]3d¹⁰4s²4p²