Question 1

Define Heisenberg uncertainty principle:

Accepted Answer

it is impossible to know simul

Question 2

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

Accepted Answer

A) True 
 B)False

Question 3

A ground-state atom of iron has ___ unpaired electrons and is _____.

Accepted Answer

A) 0, diamagnetic 
B) 6, diamagnetic 
C) 3, paramagnetic 
D) 5, paramagnetic 
E) 4, paramagnetic 
A) 0, diamagnetic 
B) 6, diamagnetic 
C) 3, paramagnetic 
D) 5, paramagnetic 
E) 4, paramagnetic

Question 4

A ground-state chromium atom has how many unpaired electrons?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 5 
E) 6 
A) 1 
B) 2 
C) 4 
D) 5 
E) 6

Question 5

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J(1/n2)

Accepted Answer

A) 9.18 × 10-20 nm 
B) 4.45 × 10-20 nm 
C) 2.16 × 10-6 nm 
D) 2.16 × 103 nm 
E) 1.38 × 1014 nm 
A) 9.18 × 10-20 nm 
B) 4.45 × 10-20 nm 
C) 2.16 × 10-6 nm 
D) 2.16 × 103 nm 
E) 1.38 × 1014 nm

Question 6

The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm.What is the maximum velocity of the electrons ejected when light of wavelength 200.nm shines on a copper plate?

Accepted Answer

A) 1.97 × 104 m/s 
B) 4.67 × 104 m/s 
C) 6.22 × 105 m/s 
D) 1.34 × 106 m/s 
E) 1.48 × 106 m/s 
A) 1.97 × 104 m/s 
B) 4.67 × 104 m/s 
C) 6.22 × 105 m/s 
D) 1.34 × 106 m/s 
E) 1.48 × 106 m/s

Question 7

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-3 m.

Accepted Answer

A) Gamma rays 
B) X rays 
C) Ultraviolet 
D) Infrared 
E) Microwave 
A) Gamma rays 
B) X rays 
C) Ultraviolet 
D) Infrared 
E) Microwave

Question 8

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, ______ has the shortest wavelength.

Accepted Answer

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

Question 9

The orbital diagram for a ground-state oxygen atom is

Accepted Answer

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

Question 10

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If $\Delta$H for the reaction Cl2(g)$\rarr$ 2Cl(g)is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Accepted Answer

A) 246.3 nm 
B) 349.3 nm 
C) 465.2 nm 
D) 492.6 nm 
E) 698.6 nm 
A) 246.3 nm 
B) 349.3 nm 
C) 465.2 nm 
D) 492.6 nm 
E) 698.6 nm

Question 11

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

Accepted Answer

A) [Ar]4s23d7 
B) [Ar]4s23d6 
C) [Ar]4s23d8 
D) [Ar]4s13d7 
E) [Ar]4s13d5 
A) [Ar]4s23d7 
B) [Ar]4s23d6 
C) [Ar]4s23d8 
D) [Ar]4s13d7 
E) [Ar]4s13d5

Question 12

Which of the following electronic transitions is consistent with an increase in energy?

Accepted Answer

A) From a 4s subshell to a 3d subshell 
B) From a 5p subshell to a 4d subshell 
C) From a 4d subshell to a 5s subshell 
D) From a 4f subshell to a 6s subshell 
E) From a 5d subshell to a 6s subshell 
A) From a 4s subshell to a 3d subshell 
B) From a 5p subshell to a 4d subshell 
C) From a 4d subshell to a 5s subshell 
D) From a 4f subshell to a 6s subshell 
E) From a 5d subshell to a 6s subshell

Question 13

Which of the following wavelengths of electromagnetic radiation has the highest energy?

Accepted Answer

A) 450.nm 
B) 225 nm 
C) 3.50 x 10-9 m 
D) 8.40 x 10-7 m 
E) 2.50 x 10-5 m 
A) 450.nm 
B) 225 nm 
C) 3.50 x 10-9 m 
D) 8.40 x 10-7 m 
E) 2.50 x 10-5 m

Question 14

Write the ground state electron configuration for a lead atom.

Accepted Answer

[Xe] 6s²4f¹⁴5

Question 15

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Accepted Answer

A) True 
 B)False

Question 16

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-1 m.

Accepted Answer

A) Gamma rays 
B) X rays 
C) Ultraviolet 
D) Infrared 
E) Microwave 
A) Gamma rays 
B) X rays 
C) Ultraviolet 
D) Infrared 
E) Microwave

Question 17

Which ground-state atom has an electron configuration described by the following orbital diagram?

Accepted Answer

A) phosphorus 
B) germanium 
C) selenium 
D) tellurium 
E) none of these 
A) phosphorus 
B) germanium 
C) selenium 
D) tellurium 
E) none of these

Question 18

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 108 m/s; h = 6.626 × 10-34 J.s)

Accepted Answer

A) 2.70 × 10-43 J 
B) 5.43 × 10-33 J 
C) 1.63 × 10-24 J 
D) 4.07 × 10-10 J 
E) 2.46 × 109 J 
A) 2.70 × 10-43 J 
B) 5.43 × 10-33 J 
C) 1.63 × 10-24 J 
D) 4.07 × 10-10 J 
E) 2.46 × 109 J

Question 19

Does an electron gain or lose energy in the transition from a 6s subshell to a 5d subshell?

Accepted Answer

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

Question 20

Which of the following is the ground-state electron configuration of Pb?

Accepted Answer

A) [Xe]6s25d106p2 
B) [Xe]6s26d106p2 
C) [Xe]6s24f146p2 
D) [Xe]6s25f146d106p2 
E) [Xe]6s24f145d106p2 
A) [Xe]6s25d106p2 
B) [Xe]6s26d106p2 
C) [Xe]6s24f146p2 
D) [Xe]6s25f146d106p2 
E) [Xe]6s24f145d106p2

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Define Heisenberg uncertainty principle:

For all atoms of the same element, the 2s orbital is larger than the 1s orbital.

A ground-state atom of iron has ___ unpaired electrons and is _____.

A ground-state chromium atom has how many unpaired electrons?

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by En = -2.18 × 10-18 J(1/n2)

The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm.What is the maximum velocity of the electrons ejected when light of wavelength 200.nm shines on a copper plate?

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-3 m.

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow.Of these colors, ______ has the shortest wavelength.

The orbital diagram for a ground-state oxygen atom is

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If Δ\DeltaΔ H for the reaction Cl2(g) →\rarr→ 2Cl(g)is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

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

Which of the following electronic transitions is consistent with an increase in energy?

Which of the following wavelengths of electromagnetic radiation has the highest energy?

Write the ground state electron configuration for a lead atom.

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10-1 m.

Which ground-state atom has an electron configuration described by the following orbital diagram?

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 108 m/s; h = 6.626 × 10-34 J.s)

Does an electron gain or lose energy in the transition from a 6s subshell to a 5d subshell?

Which of the following is the ground-state electron configuration of Pb?

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

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

A ground-state atom of iron has _ unpaired electrons and is ___.

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by E_n = -2.18 × 10^-18 J(1/n²)

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10^-3 m.

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution.If $\Delta$ H for the reaction Cl₂(g) $\rarr$ 2Cl(g)is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution?

Using the figure below, categorize electromagnetic radiation with a wavelength of 1.0 x 10^-1 m.

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 × 10⁸ m/s; h = 6.626 × 10^-34 J.s)