Question 1

The electron configuration of a ground-state vanadium atom is

Accepted Answer

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

Question 2

Which one of the following sets of quantum numbers is not possible?

Accepted Answer

The answer of Which one of the following sets of...

Question 3

Calculate the frequency of visible light having a wavelength of 686 nm.

Accepted Answer

A) 4.37 * 1014 /s 
B) 4.37 * 105 /s 
C) 6.17 * 1014 /s 
D) 2.29 * 10-15 /s 
E) 2.29 * 10-6 /s 
A) 4.37 * 1014 /s 
B) 4.37 * 105 /s 
C) 6.17 * 1014 /s 
D) 2.29 * 10-15 /s 
E) 2.29 * 10-6 /s

Question 4

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

Accepted Answer

A) 0, diamagnetic 
B) 2, diamagnetic 
C) 3, paramagnetic 
D) 5, paramagnetic 
E) 7, paramagnetic 
A) 0, diamagnetic 
B) 2, diamagnetic 
C) 3, paramagnetic 
D) 5, paramagnetic 
E) 7, paramagnetic

Question 5

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 6

What is the wavelength of radiation that has a frequency of 2.10 *1014 s -1?

Accepted Answer

A) 6.30 * 1022 m 
B) 7.00 * 102 nm 
C) 7.00 * 105 m 
D) 1.43 * 10-6 m 
E) 3.00 * 108 m 
A) 6.30 * 1022 m 
B) 7.00 * 102 nm 
C) 7.00 * 105 m 
D) 1.43 * 10-6 m 
E) 3.00 * 108 m

Question 7

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

Accepted Answer

6.4 * 10<s

Question 8

The scattering of helium atoms by a solid can be used to gain information about the lattice of atoms, provided the wavelength of the helium atoms is comparable to the dimensions of the lattice.What is the wavelength, in picometers, of a helium-4 atom with a kinetic energy of 0.10 eV.(mass of 4He = 4.0026 amu; 1 amu = 1.67 * 10-24 g; 1 eV = 1.602 * 10-19 J; h = 6.626 * 10-34 J.s)

Accepted Answer

The answer of The scattering of helium atoms by a...

Question 9

The ground-state electron configuration for an atom of indium is

Accepted Answer

A) [Kr]5s24p64d5 
B) [Ar]4s23d104p1 
C) [Ar]4s24p63d5 
D) [Kr]5s25p64d5 
E) [Kr]5s24d105p1 
A) [Kr]5s24p64d5 
B) [Ar]4s23d104p1 
C) [Ar]4s24p63d5 
D) [Kr]5s25p64d5 
E) [Kr]5s24d105p1

Question 10

A neon atom in its ground state will be diamagnetic.

Accepted Answer

A) True 
 B)False

Question 11

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 12

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 8 
A) 2 
B) 3 
C) 4 
D) 6 
E) 8

Question 13

If a hydrogen atom and a helium atom have the same kinetic energy,

Accepted Answer

A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom. 
A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom.

Question 14

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 J0s)

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 15

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Accepted Answer

A) 5.7 * 10-4 m 
B) 9.5 * 10-31 m 
C) 2.8 * 10-7 m 
D) 9.5 * 10-28 m 
E) 5.7 * 10-7 m 
A) 5.7 * 10-4 m 
B) 9.5 * 10-31 m 
C) 2.8 * 10-7 m 
D) 9.5 * 10-28 m 
E) 5.7 * 10-7 m

Question 16

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 *10 -18 J(1/n2)

Accepted Answer

A) 3.08 * 1015 /s 
B) 1.03 * 108 /s 
C) 2.06 * 1014 /s 
D) 1.35 * 10-51 /s 
E) 8.22 * 1014 /s 
A) 3.08 * 1015 /s 
B) 1.03 * 108 /s 
C) 2.06 * 1014 /s 
D) 1.35 * 10-51 /s 
E) 8.22 * 1014 /s

Question 17

The bonds of oxygen molecules are broken by sunlight.The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol. What is the wavelength of sunlight that can cause this bond breakage?

Accepted Answer

The answer of The bonds of oxygen molecules are broken...

Question 18

How many electrons in a ground-state tellurium atom are in orbitals labeled by l = 1?

Accepted Answer

A) 4 
B) 10 
C) 12 
D) 16 
E) 22 
A) 4 
B) 10 
C) 12 
D) 16 
E) 22

Question 19

If we take away two electrons from the outer shell of calcium, it would have the same electron configuration as what element?

Accepted Answer

The answer of If we take away two electrons from...

Question 20

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10-24 g; h = 6.626 * 10-34 J.s)

Accepted Answer

A) 16 pm 
B) 0.016 nm 
C) 0.16 nm 
D) 160 nm 
E) 1.6 * 10-4 m 
A) 16 pm 
B) 0.016 nm 
C) 0.16 nm 
D) 160 nm 
E) 1.6 * 10-4 m

Exam 7: Quantum Theory and the Electronic Structure of Atoms

The electron configuration of a ground-state vanadium atom is

Which one of the following sets of quantum numbers is not possible?

Calculate the frequency of visible light having a wavelength of 686 nm.

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

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

What is the wavelength of radiation that has a frequency of 2.10 *1014 s -1?

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

The ground-state electron configuration for an atom of indium is

A neon atom in its ground state will be diamagnetic.

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

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

If a hydrogen atom and a helium atom have the same kinetic energy,

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 J0s)

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 *10 -18 J(1/n2)

The bonds of oxygen molecules are broken by sunlight.The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol. What is the wavelength of sunlight that can cause this bond breakage?

How many electrons in a ground-state tellurium atom are in orbitals labeled by l = 1?

If we take away two electrons from the outer shell of calcium, it would have the same electron configuration as what element?

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10-24 g; h = 6.626 * 10-34 J.s)

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

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

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

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Organic Chemistry

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Filters

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

What is the wavelength of radiation that has a frequency of 2.10 *10¹⁴ s^-1?

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10^-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10^-27 kg)

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 J0s)

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen E_n = -2.18 *10^-18 J(1/n²)

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10^-24 g; h = 6.626 * 10^-34 J.s)