Question 1

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Accepted Answer

A)  1 
B)  3 
C)  5 
D)  7 
E)  9 
A)  1 
B)  3 
C)  5 
D)  7 
E)  9

Question 2

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

Accepted Answer

A)  phosphorus 
B)  nitrogen 
C)  arsenic 
D)  vanadium 
E)  sulfur 
A)  phosphorus 
B)  nitrogen 
C)  arsenic 
D)  vanadium 
E)  sulfur

Question 3

________ is the number of waves passing through a specific point per second.

Accepted Answer

The answer of ________ is the number of waves passing...

Question 4

The most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized is

Accepted Answer

A)  the Pauli exclusion principle. 
B)  Bohr's equation. 
C)  Hund's rule. 
D)  de Broglie's relation. 
E)  Dalton's atomic theory. 
A)  the Pauli exclusion principle. 
B)  Bohr's equation. 
C)  Hund's rule. 
D)  de Broglie's relation. 
E)  Dalton's atomic theory.

Question 5

Which of the following subshells has the highest energy in the element tantalum?

Accepted Answer

A)  4s 
B)  4d 
C)  5p 
D)  4f 
E)  6s 
A)  4s 
B)  4d 
C)  5p 
D)  4f 
E)  6s

Question 6

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is ________. (h = 6.63 × 10-34 J • s; mass of a proton = 1.673 × 10-24 g)

Accepted Answer

A)  3.96 × 10-10 m 
B)  3.96 × 10-7 m 
C)  2.52 × 106 m 
D)  2.52 × 109 m 
E)  > 1010 m 
A)  3.96 × 10-10 m 
B)  3.96 × 10-7 m 
C)  2.52 × 106 m 
D)  2.52 × 109 m 
E)  > 1010 m

Question 7

How many electrons are there in the 3rd principal energy level (n = 3) of a phosphorus atom?

Accepted Answer

A)  3 
B)  5 
C)  6 
D)  8 
E)  10 
A)  3 
B)  5 
C)  6 
D)  8 
E)  10

Question 8

A possible set of quantum numbers for the last electron added to complete an atom of germanium in its ground state is

Accepted Answer

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

Question 9

The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s).

Accepted Answer

A)  4 × 10-10 J 
B)  6 × 1014 J 
C)  1 × 10-27 J 
D)  2 × 10-25 J 
E)  4 × 10-19 J 
A)  4 × 10-10 J 
B)  6 × 1014 J 
C)  1 × 10-27 J 
D)  2 × 10-25 J 
E)  4 × 10-19 J

Question 10

How many orbitals are there in the n = 4 level of the H-atom?

Accepted Answer

A)  4 
B)  6 
C)  8 
D)  16 
E)  18 
A)  4 
B)  6 
C)  8 
D)  16 
E)  18

Question 11

Select the arrangement of electromagnetic radiation which starts with the shortest wavelength and increases to longest wavelength.

Accepted Answer

A)  radio, infrared, ultraviolet, gamma rays 
B)  radio, ultraviolet, infrared, gamma rays 
C)  gamma rays, radio, ultraviolet, infrared 
D)  gamma rays, infrared, radio, ultraviolet 
E)  gamma rays, ultraviolet, infrared, radio 
A)  radio, infrared, ultraviolet, gamma rays 
B)  radio, ultraviolet, infrared, gamma rays 
C)  gamma rays, radio, ultraviolet, infrared 
D)  gamma rays, infrared, radio, ultraviolet 
E)  gamma rays, ultraviolet, infrared, radio

Question 12

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

Accepted Answer

The answer of In which region of the electromagnetic spectrum...

Question 13

The electron configuration of a ground-state vanadium atom is

Accepted Answer

A)  [Ar]4s24d3. 
B)  [Ar]4s24p3. 
C)  [Ar]4s23d3. 
D)  [Ar]3d5. 
E)  [Ar]4s23d7. 
A)  [Ar]4s24d3. 
B)  [Ar]4s24p3. 
C)  [Ar]4s23d3. 
D)  [Ar]3d5. 
E)  [Ar]4s23d7.

Question 14

What is the total number of electrons that can occupy the 4f orbitals?

Accepted Answer

The answer of What is the total number of electrons...

Question 15

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, ml = -2, ms = +1/2

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  6 
E)  10 
A)  0 
B)  1 
C)  2 
D)  6 
E)  10

Question 16

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops 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). (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s)

Accepted Answer

A)  4.45 × 10-20 nm 
B)  2.16 × 10-6 nm 
C)  9.18 × 10-20 nm 
D)  1.38 × 1014 nm 
E)  2.17 × 103 nm 
A)  4.45 × 10-20 nm 
B)  2.16 × 10-6 nm 
C)  9.18 × 10-20 nm 
D)  1.38 × 1014 nm 
E)  2.17 × 103 nm

Question 17

________ is the quantum number which describes the shape of an atomic orbital.

Accepted Answer

The angula

Question 18

Which element has the following ground-state electron configuration? [Kr]5s24d105p2

Accepted Answer

A)  Sn 
B)  Sb 
C)  Pb 
D)  Ge 
E)  Te 
A)  Sn 
B)  Sb 
C)  Pb 
D)  Ge 
E)  Te

Question 19

For the following equations
a. name the scientist to whom the equation is attributed.
b. in not more than three lines, explain clearly what the equation means or represents.
1. E = nhv
2. λ = h/mu

Accepted Answer

1. a. Planck
b. A blackbody can only emi

Question 20

Select the correct electron configuration for Cu (Z = 29).

Accepted Answer

A)  [Ar]4s23d9 
B)  [Ar]4s13d10 
C)  [Ar]4s24p63d3 
D)  [Ar]4s24d9 
E)  [Ar]5s24d9 
A)  [Ar]4s23d9 
B)  [Ar]4s13d10 
C)  [Ar]4s24p63d3 
D)  [Ar]4s24d9 
E)  [Ar]5s24d9

Exam 6: Quantum Theory and the Electronic Structure of Atoms

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

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

________ is the number of waves passing through a specific point per second.

The most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized is

Which of the following subshells has the highest energy in the element tantalum?

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is ________. (h = 6.63 × 10-34 J • s; mass of a proton = 1.673 × 10-24 g)

How many electrons are there in the 3rd principal energy level (n = 3) of a phosphorus atom?

A possible set of quantum numbers for the last electron added to complete an atom of germanium in its ground state is

The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s).

How many orbitals are there in the n = 4 level of the H-atom?

Select the arrangement of electromagnetic radiation which starts with the shortest wavelength and increases to longest wavelength.

In which region of the electromagnetic spectrum would radiation of the wavelength λ = 147.3 nm be found?

The electron configuration of a ground-state vanadium atom is

What is the total number of electrons that can occupy the 4f orbitals?

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, ml = -2, ms = +1/2

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops 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). (c = 3.00 × 108 m/s; h = 6.63 × 10-34 J • s)

________ is the quantum number which describes the shape of an atomic orbital.

Which element has the following ground-state electron configuration? [Kr]5s24d105p2

For the following equations a. name the scientist to whom the equation is attributed. b. in not more than three lines, explain clearly what the equation means or represents. 1. E = nhv 2. λ = h/mu

Select the correct electron configuration for Cu (Z = 29).

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

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Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

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The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is ________. (h = 6.63 × 10^-34 J • s; mass of a proton = 1.673 × 10^-24 g)

How many electrons are there in the 3^rd principal energy level (n = 3) of a phosphorus atom?

The solar radiation spectrum peaks at a wavelength of approximately 500 nm. Calculate the energy of one photon of that radiation (c = 3.00 × 10⁸m/s; h = 6.63 × 10^-34 J • s).

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4, l = 3, m_l = -2, m_s = +1/2

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron drops 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). (c = 3.00 × 10⁸m/s; h = 6.63 × 10^-34 J • s)

Which element has the following ground-state electron configuration? [Kr]5s²4d¹⁰5p²