Question 1

Which of the following statements is not correct about the radius of atoms or ions?

Accepted Answer

A) The metallic radius of an atom is defined as half the distance between the nuclear centers in a crystal of the metal. 
B) The atomic radius of an atom is defined as half the length of a covalent bond involving the atom. 
C) Radii vary only based on group position in the periodic table. 
D) The ionic radius of an ion is computed from the distances between nuclear centers in ionic crystals. 
E) Radii depend on the interaction of the outermost electrons of the atom/ion and the nucleus. 
A) The metallic radius of an atom is defined as half the distance between the nuclear centers in a crystal of the metal. 
B) The atomic radius of an atom is defined as half the length of a covalent bond involving the atom. 
C) Radii vary only based on group position in the periodic table. 
D) The ionic radius of an ion is computed from the distances between nuclear centers in ionic crystals. 
E) Radii depend on the interaction of the outermost electrons of the atom/ion and the nucleus.

Question 2

Write the electron configuration for each of the following ions: a) O2F1F1F1S1F1F1F10 b) Ca2F1F1F1S1F1F1F10 c) Fe3F1F1F1S1F1F1F10  d) Cu2F1F1F1S1F1F1F10.

Accepted Answer

a) [Ne]
b)

Question 3

Which transition in a hydrogen atom requires the smallest change in energy?

Accepted Answer

A) n1   F1F1F1S1F1F1F101 to n2   F1F1F1S1F1F1F102 
B) n1   F1F1F1S1F1F1F103 to n2   F1F1F1S1F1F1F104 
C) n1   F1F1F1S1F1F1F102 to n2   F1F1F1S1F1F1F103 
D) n1   F1F1F1S1F1F1F103 to n2   F1F1F1S1F1F1F105 
E) n1   F1F1F1S1F1F1F104 to n2   F1F1F1S1F1F1F105 
A) n1   F1F1F1S1F1F1F101 to n2   F1F1F1S1F1F1F102 
B) n1   F1F1F1S1F1F1F103 to n2   F1F1F1S1F1F1F104 
C) n1   F1F1F1S1F1F1F102 to n2   F1F1F1S1F1F1F103 
D) n1   F1F1F1S1F1F1F103 to n2   F1F1F1S1F1F1F105 
E) n1   F1F1F1S1F1F1F104 to n2   F1F1F1S1F1F1F105

Question 4

How many of these atoms or ions have no unpaired electrons? N, O, NaF1F1F1S1F1F1F10, N3F1F1F1S1F1F1F10, Sc

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 5

Which of the following types of electromagnetic radiation have the longest wavelength?

Accepted Answer

A) gamma rays 
B) X-rays 
C) radio waves 
D) infrared 
E) visible 
A) gamma rays 
B) X-rays 
C) radio waves 
D) infrared 
E) visible

Question 6

Which of the following will lead to an increase in the kinetic energies of photoelectrons emitted when light is incident on a metal surface?

Accepted Answer

A) decrease in the light's wavelength 
B) increase in the light's intensity 
C) increase in the light's wavelength 
D) decrease in the light's frequency 
E) decrease in the light's intensity 
A) decrease in the light's wavelength 
B) increase in the light's intensity 
C) increase in the light's wavelength 
D) decrease in the light's frequency 
E) decrease in the light's intensity

Which of the following statements is not correct about the radius of atoms or ions?

Write the electron configuration for each of the following ions: a) O²^ b) Ca²^ c) Fe³^ d) Cu²^.

Which transition in a hydrogen atom requires the smallest change in energy?

How many of these atoms or ions have no unpaired electrons? N, O, Na^, N³^, Sc

Which of the following types of electromagnetic radiation have the longest wavelength?

Which of the following will lead to an increase in the kinetic energies of photoelectrons emitted when light is incident on a metal surface?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Kinetics: Reactions in the Atmosphere

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Exam 7: A Quantum Model of Atoms: Waves and Particles

Which of the following statements is not correct about the radius of atoms or ions?

Write the electron configuration for each of the following ions: a) O2 b) Ca2 c) Fe3 d) Cu2.

Which transition in a hydrogen atom requires the smallest change in energy?

How many of these atoms or ions have no unpaired electrons? N, O, Na, N3, Sc

Which of the following types of electromagnetic radiation have the longest wavelength?

Which of the following will lead to an increase in the kinetic energies of photoelectrons emitted when light is incident on a metal surface?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Kinetics: Reactions in the Atmosphere

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Write the electron configuration for each of the following ions: a) O²^ b) Ca²^ c) Fe³^ d) Cu²^.

How many of these atoms or ions have no unpaired electrons? N, O, Na^, N³^, Sc