Question 1

-Wave (a)has the

Accepted Answer

A) longer wavelength and higher energy than wave (b). 
B) longer wavelength and lower energy than wave (b). 
C) shorter wavelength and higher energy than wave (b). 
D) shorter wavelength and lower energy than wave (b). 
A) longer wavelength and higher energy than wave (b). 
B) longer wavelength and lower energy than wave (b). 
C) shorter wavelength and higher energy than wave (b). 
D) shorter wavelength and lower energy than wave (b). C

Question 2

Which of the following is not quantized?

Accepted Answer

A) the charge on a monatomic ion 
B) the distance between two objects 
C) the population of the United States 
D) the static charge on a balloon rubbed with wool 
A) the charge on a monatomic ion 
B) the distance between two objects 
C) the population of the United States 
D) the static charge on a balloon rubbed with wool B

Question 3

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 C

Question 4

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

Accepted Answer

A) ns1 
B) ns2 
C) 1s22s1 
D) 1s22s2 
A) ns1 
B) ns2 
C) 1s22s1 
D) 1s22s2

Question 5

The number of orbitals having the quantum numbers,n = 4 and l = 2 is ________.

Accepted Answer

The answer of The number of orbitals having the quantum...

Question 6

Of the following,which atom has the largest atomic radius?

Accepted Answer

A) Na 
B) Cl 
C) K 
D) Br 
A) Na 
B) Cl 
C) K 
D) Br

Question 7

-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 8

Dentists employ light-cured materials to fill cavities.The wavelength of electromagnetic radiation used to photopolymerize restorative materials falls in the ultraviolet or visible region,depending on the instrument employed.Which of these wavelengths is in the UV region?

Accepted Answer

A) 31 nm 
B) 350 nm 
C) 430 nm 
D) 1030 nm 
A) 31 nm 
B) 350 nm 
C) 430 nm 
D) 1030 nm

Question 9

An oxygen molecule has a mass of 5.3 × 10-26 kg and an approximate diameter of 3.6 × 10-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

Accepted Answer

A) is less than or equal to 5 × 10-26 m. 
B) must be equal to 5 × 10-26 m. 
C) must be equal to 1 × 10-9 m. 
D) is greater than or equal to 1 × 10-9 m. 
A) is less than or equal to 5 × 10-26 m. 
B) must be equal to 5 × 10-26 m. 
C) must be equal to 1 × 10-9 m. 
D) is greater than or equal to 1 × 10-9 m.

Question 10

For a multielectron atom,a 3s orbital lies lower in energy than a 3p orbital because

Accepted Answer

A) a 3p orbital has more nodal surfaces than a 3s orbital. 
B) other electrons more effectively shield electrons in the 3s orbital from the nucleus. 
C) other electrons more effectively shield electrons in the 3p orbital from the nucleus. 
D) there are more p orbitals than s orbitals in a given shell. 
A) a 3p orbital has more nodal surfaces than a 3s orbital. 
B) other electrons more effectively shield electrons in the 3s orbital from the nucleus. 
C) other electrons more effectively shield electrons in the 3p orbital from the nucleus. 
D) there are more p orbitals than s orbitals in a given shell.

Question 11

Which of the following have the same number of valence electrons?

Accepted Answer

A) K,As,Br 
B) B,Si,As 
C) N,As,Bi 
D) He,Ne,F 
A) K,As,Br 
B) B,Si,As 
C) N,As,Bi 
D) He,Ne,F

Question 12

The spheres below represent atoms of Li,Be,B,and F (not necessarily in that order).  
-Which one of these spheres represents an atom of Li?

Accepted Answer

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

Question 13

According to the Balmer-Rydberg equation,transitions from n = 5 to m = 2 result in a photons of light that give rise to a spectral line with what color?

Accepted Answer

The answer of According to the Balmer-Rydberg equation,transitions from n...

Question 14

Which of the following is not a valid set of quantum numbers?

Accepted Answer

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

Question 15

What are the possible values of n and ml for an electron in a 4dorbital?

Accepted Answer

A) n = 1,2,3,or 4 and ml = 2 
B) n = 1,2,3,or 4 and ml = -2,-1,0,+1,or +2 
C) n = 4 and ml = 2 
D) n = 4 and ml = -2,-1,0,+1,or +2 
A) n = 1,2,3,or 4 and ml = 2 
B) n = 1,2,3,or 4 and ml = -2,-1,0,+1,or +2 
C) n = 4 and ml = 2 
D) n = 4 and ml = -2,-1,0,+1,or +2

Question 16

The element Mn has how many valence electrons?

Accepted Answer

A) 2 
B) 5 
C) 7 
D) 25 
A) 2 
B) 5 
C) 7 
D) 25

Question 17

Which orbital-filling diagram represents the ground state of oxygen?

Accepted Answer

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

Question 18

What is the de Broglie wavelength of an electron (m = 9.11 × 10-31 kg)moving at a velocity of
3)0 × 107 m/s (10% of the speed of light)?

Accepted Answer

A) less than 3.9 × 10-12 m 
B) 2)4 × 10-11 m 
C) 3)3 × 10-8 m 
D) greater than 1.1 × 10-4 m 
A) less than 3.9 × 10-12 m 
B) 2)4 × 10-11 m 
C) 3)3 × 10-8 m 
D) greater than 1.1 × 10-4 m

Question 19

The algebraic signs (+ and -)sometimes written within the lobes of orbitals are analogous to different ________ of a wave.

Accepted Answer

The answer of The algebraic signs (+ and -)sometimes written...

Question 20

The ground-state electron configuration of the oxide ion,O2-,is the same as which noble gas?

Accepted Answer

Exam 5: Periodicity and the Atomic Structure of Atoms

-Wave (a)has the

Which of the following is not quantized?

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

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

The number of orbitals having the quantum numbers,n = 4 and l = 2 is ________.

Of the following,which atom has the largest atomic radius?

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

Dentists employ light-cured materials to fill cavities.The wavelength of electromagnetic radiation used to photopolymerize restorative materials falls in the ultraviolet or visible region,depending on the instrument employed.Which of these wavelengths is in the UV region?

An oxygen molecule has a mass of 5.3 × 10-26 kg and an approximate diameter of 3.6 × 10-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

For a multielectron atom,a 3s orbital lies lower in energy than a 3p orbital because

Which of the following have the same number of valence electrons?

The spheres below represent atoms of Li,Be,B,and F (not necessarily in that order). -Which one of these spheres represents an atom of Li?

According to the Balmer-Rydberg equation,transitions from n = 5 to m = 2 result in a photons of light that give rise to a spectral line with what color?

Which of the following is not a valid set of quantum numbers?

What are the possible values of n and ml for an electron in a 4dorbital?

The element Mn has how many valence electrons?

Which orbital-filling diagram represents the ground state of oxygen?

What is the de Broglie wavelength of an electron (m = 9.11 × 10-31 kg)moving at a velocity of 3)0 × 107 m/s (10% of the speed of light)?

The algebraic signs (+ and -)sometimes written within the lobes of orbitals are analogous to different ________ of a wave.

The ground-state electron configuration of the oxide ion,O2-,is the same as which noble gas?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

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

An oxygen molecule has a mass of 5.3 × 10^-26 kg and an approximate diameter of 3.6 × 10^-10 m.If the molecule is moving at 400 m/s (1000 mph)with an uncertainty in velocity of 1 m/s,the uncertainty in position

What are the possible values of n and m_l for an electron in a 4dorbital?

What is the de Broglie wavelength of an electron (m = 9.11 × 10^-31 kg)moving at a velocity of 3)0 × 10⁷ m/s (10% of the speed of light)?

The ground-state electron configuration of the oxide ion,O^2-,is the same as which noble gas?