Question 1

A possible set of quantum numbers to describe an electron in a 5p subshell is

Accepted Answer

A) n = 5, l = 2, ml = 2 , ms = +1/2 
B) n = 4, l = 0, ml = 0, ms = - 1/2 
C) n = 5, l = 0, ml = 0, ms = +1/2 
D) n = 3, l = 1, ml = 1, ms = - 1/2 
E) n = 5, l = 1, ml = 0, ms = +1/2 
A) n = 5, l = 2, ml = 2 , ms = +1/2 
B) n = 4, l = 0, ml = 0, ms = - 1/2 
C) n = 5, l = 0, ml = 0, ms = +1/2 
D) n = 3, l = 1, ml = 1, ms = - 1/2 
E) n = 5, l = 1, ml = 0, ms = +1/2 E

Question 2

Transition metal elements have atoms or ions with partially filled

Accepted Answer

A) s subshells. 
B) p subshells. 
C) d subshells. 
D) f subshells. 
E) g subshells. 
A) s subshells. 
B) p subshells. 
C) d subshells. 
D) f subshells. 
E) g subshells. C

Question 3

Does an electron gain or lose energy in the transition from a 4f subshell to a 6s subshell?

Accepted Answer

lose

Question 4

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 5

What is the maximum number of electrons in an atom that can have the following quantum numbers? n = 3 l = 1

Accepted Answer

A) 18 
B) 6 
C) 3 
D) 2 
E) 1 
A) 18 
B) 6 
C) 3 
D) 2 
E) 1

Question 6

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

Accepted Answer

A) [Xe]6s25d7 
B) [Xe]6s26d7 
C) [Xe]6s24f145d7 
D) [Xe]6s25f146d7 
E) [Xe]4s25f146d7 
A) [Xe]6s25d7 
B) [Xe]6s26d7 
C) [Xe]6s24f145d7 
D) [Xe]6s25f146d7 
E) [Xe]4s25f146d7

Question 7

Which element has the following ground-state electron configuration? [Xe]6s24f145d10

Accepted Answer

A) Lu 
B) Cd 
C) Hg 
D) Lr 
E) Au 
A) Lu 
B) Cd 
C) Hg 
D) Lr 
E) Au

Question 8

What is the total number of electrons possible in the 2p orbitals?

Accepted Answer

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

Question 9

Calculate the frequency of visible light having a wavelength of 486 nm.

Accepted Answer

A) 2.06 × 1014 /s 
B) 2.06 × 106 /s 
C) 6.17 × 1014 /s 
D) 1.20 × 10-15 /s 
E) 4.86 × 10-7 /s 
A) 2.06 × 1014 /s 
B) 2.06 × 106 /s 
C) 6.17 × 1014 /s 
D) 1.20 × 10-15 /s 
E) 4.86 × 10-7 /s

Question 10

Which choice lists two elements with ground-state electron configurations that are well known exceptions to the Aufbau principle?

Accepted Answer

A) Cu and C 
B) Cr and Cu 
C) Cs and Cl 
D) Rb and Co 
E) Fe and Co 
A) Cu and C 
B) Cr and Cu 
C) Cs and Cl 
D) Rb and Co 
E) Fe and Co

Question 11

Which element has the following ground-state electron configuration? [Kr]5s14d5

Accepted Answer

A) Mn 
B) Mo 
C) Nb 
D) Re 
E) Tc 
A) Mn 
B) Mo 
C) Nb 
D) Re 
E) Tc

Question 12

Calculate the wavelength associated with a 20Ne+ ion moving at a velocity of 2.0 × 105 m/s.The atomic mass of 20Ne is 19.992 amu.

Accepted Answer

A) 1.7 x 10-40 m 
B) 1.0 × 10-18 m 
C) 1.0 × 10-16 m 
D) 1.0 × 10-13 m 
E) 9.7 × 1012 m 
A) 1.7 x 10-40 m 
B) 1.0 × 10-18 m 
C) 1.0 × 10-16 m 
D) 1.0 × 10-13 m 
E) 9.7 × 1012 m

Question 13

A single pulse of a laser yields an average of 5.00 × 1018 photons with $\lambda$ = 633 nm.If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

Accepted Answer

A) 38300 
B) 3830 
C) 3340 
D) 2120 
E) 212 
A) 38300 
B) 3830 
C) 3340 
D) 2120 
E) 212

Question 14

Write the ground state electron configuration for the selenium atom.

Accepted Answer

[Ar] 4s²3d¹⁰4

Question 15

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

Question 16

List the following sets of quantum numbers in order of increasing energy: I.n = 4, l = 1, ml = 1, ms = +1/2
II.n = 3, l = 2, ml = -1, ms = +1/2
III.n = 4, l = 0, ml = 0, ms = +1/2

Accepted Answer

A) I < II < III 
B) II < III < I 
C) III < II < I 
D) I < III < II 
E) III < I < II 
A) I < II < III 
B) II < III < I 
C) III < II < I 
D) I < III < II 
E) III < I < II

Question 17

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 1870 nm and 102.5 nm, respectively.What is the principal quantum number or shell 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 18

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 19

According to de Broglie's equation, the wavelength associated with the motion of a particle increases as the particle mass decreases.

Accepted Answer

A) True 
 B)False

Question 20

Lanthanide (or rare earth elements)have atoms or ions with partially filled

Accepted Answer

A) s subshells. 
B) p subshells. 
C) d subshells. 
D) f subshells. 
E) g subshells. 
A) s subshells. 
B) p subshells. 
C) d subshells. 
D) f subshells. 
E) g subshells.

Exam 7: Quantum Theory and the Electronic Structure of Atoms

A possible set of quantum numbers to describe an electron in a 5p subshell is

Transition metal elements have atoms or ions with partially filled

Does an electron gain or lose energy in the transition from a 4f subshell to a 6s subshell?

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

What is the maximum number of electrons in an atom that can have the following quantum numbers? n = 3 l = 1

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

Which element has the following ground-state electron configuration? [Xe]6s24f145d10

What is the total number of electrons possible in the 2p orbitals?

Calculate the frequency of visible light having a wavelength of 486 nm.

Which choice lists two elements with ground-state electron configurations that are well known exceptions to the Aufbau principle?

Which element has the following ground-state electron configuration? [Kr]5s14d5

Calculate the wavelength associated with a 20Ne+ ion moving at a velocity of 2.0 × 105 m/s.The atomic mass of 20Ne is 19.992 amu.

A single pulse of a laser yields an average of 5.00 × 1018 photons with λ\lambdaλ = 633 nm.If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

Write the ground state electron configuration for the selenium atom.

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]

List the following sets of quantum numbers in order of increasing energy: I.n = 4, l = 1, ml = 1, ms = +1/2 II.n = 3, l = 2, ml = -1, ms = +1/2 III.n = 4, l = 0, ml = 0, ms = +1/2

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?

According to de Broglie's equation, the wavelength associated with the motion of a particle increases as the particle mass decreases.

Lanthanide (or rare earth elements)have atoms or ions with partially filled

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

Which element has the following ground-state electron configuration? [Xe]6s²4f¹⁴5d¹⁰

Which element has the following ground-state electron configuration? [Kr]5s¹4d⁵

Calculate the wavelength associated with a ²⁰Ne⁺ ion moving at a velocity of 2.0 × 10⁵ m/s.The atomic mass of ²⁰Ne is 19.992 amu.

A single pulse of a laser yields an average of 5.00 × 10¹⁸ photons with $\lambda$ = 633 nm.If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

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]

List the following sets of quantum numbers in order of increasing energy: I.n = 4, l = 1, m_l = 1, m_s = +1/2 II.n = 3, l = 2, m_l = -1, m_s = +1/2 III.n = 4, l = 0, m_l = 0, m_s = +1/2