Question 1

For an orbital,a node is

Accepted Answer

A) the midpoint of the orbital. 
B) a surface inside which there is a 90% chance of finding the electron. 
C) a surface where there is a maximum probability of finding the electron. 
D) a surface where there is no chance of finding the electron. 
A) the midpoint of the orbital. 
B) a surface inside which there is a 90% chance of finding the electron. 
C) a surface where there is a maximum probability of finding the electron. 
D) a surface where there is no chance of finding the electron.

Question 2

The visible region of the electromagnetic radiation spectrum extends from ________ nm to ________ nm.

Accepted Answer

The answer of The visible region of the electromagnetic radiation...

Question 3

Which orbital-filling diagram violates Hund's rule?

Accepted Answer

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

Question 4

From the following list of observations,choose the one that most clearly supports the following conclusion by de Broglie: "Electrons have wave properties."

Accepted Answer

A) Line emission spectrum of hydrogen 
B) The photoelectric effect 
C) Xray diffraction 
D) Sodium chloride produces sodium solid and chlorine gas 
A) Line emission spectrum of hydrogen 
B) The photoelectric effect 
C) Xray diffraction 
D) Sodium chloride produces sodium solid and chlorine gas

Question 5

What is a quantum of light called?

Accepted Answer

A) the amplitude 
B) the frequency 
C) a photon 
D) the wavelength 
A) the amplitude 
B) the frequency 
C) a photon 
D) the wavelength

Question 6

A person is most likely to experience serious tissue damage when exposed to which of the following forms of electromagnetic radiation?

Accepted Answer

A) microwaves 
B) ultraviolet 
C) radio waves 
D) x-rays 
A) microwaves 
B) ultraviolet 
C) radio waves 
D) x-rays

Question 7

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) 300 nm 
C) 440 nm 
D) 840 nm 
A) 31 nm 
B) 300 nm 
C) 440 nm 
D) 840 nm

Question 8

What is the first ionization energy for a hydrogen atom in the ground state? The Rydberg constant is   .

Accepted Answer

A) 7.27 × 10-36 J 
B) 1.63 × 10-27 J 
C) 2.18 × 10-18 J 
D) 0.00823 J 
A) 7.27 × 10-36 J 
B) 1.63 × 10-27 J 
C) 2.18 × 10-18 J 
D) 0.00823 J

Question 9

Within a given shell of a multielectron atom,the lower l for an orbital,the

Accepted Answer

A) higher the orbital energy and the higher Zeff for the electron. 
B) higher the orbital energy and the lower Zeff for the electron. 
C) lower the orbital energy and the higher Zeff for the electron. 
D) lower the orbital energy and the lower Zeff for the electron. 
A) higher the orbital energy and the higher Zeff for the electron. 
B) higher the orbital energy and the lower Zeff for the electron. 
C) lower the orbital energy and the higher Zeff for the electron. 
D) lower the orbital energy and the lower Zeff for the electron.

Question 10

According to the Heisenberg uncertainty principle,

Accepted Answer

A) the position of a particle cannot be measured precisely. 
B) the momentum of a particle cannot be measured precisely. 
C) neither the position nor the momentum of a particle can be measured precisely. 
D) the position and momentum of a particle can be measured precisely,but not at the same time. 
A) the position of a particle cannot be measured precisely. 
B) the momentum of a particle cannot be measured precisely. 
C) neither the position nor the momentum of a particle can be measured precisely. 
D) the position and momentum of a particle can be measured precisely,but not at the same time.

Question 11

The element Bh has how many valence electrons?

Accepted Answer

A) 2 
B) 5 
C) 7 
D) 1 
A) 2 
B) 5 
C) 7 
D) 1

Question 12

Which orbital-filling diagram represents the anomalous ground state of chromium?

Accepted Answer

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

Question 13

The amount of data that can be stored in an optical disc storage medium is related to the wavelength of the laser employed.Blu-Ray discs that are read by a laser having a wavelength of 405 nm have a much greater storage capacity than a DVD that is read by a 650 nm laser.The color of the 405 nm laser beam is ________,whereas the color of the 650 nm laser is ________.

Accepted Answer

The answer of The amount of data that can be...

Question 14

A neutral N atom has how many valence electrons?

Accepted Answer

A) 1 
B) 3 
C) 6 
D) 14 
A) 1 
B) 3 
C) 6 
D) 14

Question 15

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 16

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 17

The ground-state electron configuration of the C4-,is the same as which noble gas?

Accepted Answer

Question 18

The laser used to read Blu-Ray discs have a wavelength of 405 nm.405 nm photons have of an energy of ________ J,and a mole of 405 nm photons has an energy of ________ kJ/mol.

Accepted Answer

The answer of The laser used to read Blu-Ray discs...

Question 19

Which element has the ground-state electron configuration [Xe]6s2  4?

Accepted Answer

A) Re 
B) Ir 
C) Eu 
D) Gd 
A) Re 
B) Ir 
C) Eu 
D) Gd

Question 20

What are the possible values of l if n = 5?

Accepted Answer

A) 5 
B) 0,1,2,3,or 4 
C) -4,-3,-2,-1,0,+1,+2,+3,or +4 
D) -5,-4,-3,-2,-1,0,+1,+2,+3,+4,or +5 
A) 5 
B) 0,1,2,3,or 4 
C) -4,-3,-2,-1,0,+1,+2,+3,or +4 
D) -5,-4,-3,-2,-1,0,+1,+2,+3,+4,or +5

Exam 5: Periodicity and the Electronic Structure of Atoms

For an orbital,a node is

The visible region of the electromagnetic radiation spectrum extends from ________ nm to ________ nm.

Which orbital-filling diagram violates Hund's rule?

From the following list of observations,choose the one that most clearly supports the following conclusion by de Broglie: "Electrons have wave properties."

What is a quantum of light called?

A person is most likely to experience serious tissue damage when exposed to which of the following forms of electromagnetic radiation?

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?

What is the first ionization energy for a hydrogen atom in the ground state? The Rydberg constant is .

Within a given shell of a multielectron atom,the lower l for an orbital,the

According to the Heisenberg uncertainty principle,

The element Bh has how many valence electrons?

Which orbital-filling diagram represents the anomalous ground state of chromium?

A neutral N atom has how many valence electrons?

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 ground-state electron configuration of the C4-,is the same as which noble gas?

The laser used to read Blu-Ray discs have a wavelength of 405 nm.405 nm photons have of an energy of ________ J,and a mole of 405 nm photons has an energy of ________ kJ/mol.

Which element has the ground-state electron configuration [Xe]6s2 4?

What are the possible values of l if n = 5?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories 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

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

The visible region of the electromagnetic radiation spectrum extends from nm to nm.

The ground-state electron configuration of the C^4-,is the same as which noble gas?

The laser used to read Blu-Ray discs have a wavelength of 405 nm.405 nm photons have of an energy of J,and a mole of 405 nm photons has an energy of kJ/mol.

Which element has the ground-state electron configuration [Xe]6s² 4?