Question 1

A hydrogen atom is in the 6h state. Which of the following could be an orbital quantum number?

Accepted Answer

A) 5 
B) 6 
C) 7 
D) 8 
E) 9 
A) 5 
B) 6 
C) 7 
D) 8 
E) 9 A

Question 2

The principal quantum number can have any integer value ranging from

Accepted Answer

A) -∞ to +∞. 
B) 0 to ∞. 
C) 1 to ∞. 
D) 1 to n. 
E) 1 to 100. 
A) -∞ to +∞. 
B) 0 to ∞. 
C) 1 to ∞. 
D) 1 to n. 
E) 1 to 100. C

Question 3

In a helium-neon laser the emissions occur from transitions between two excited states in neon, one being at 20.66 eV above the ground state and the other being 18.70 eV above ground. What is the energy of the photons emitted by this laser?

Accepted Answer

A) 20.66 eV 
B) 1.96 eV 
C) 18.70 eV 
D) 19.60 eV 
E) 39.36 eV 
A) 20.66 eV 
B) 1.96 eV 
C) 18.70 eV 
D) 19.60 eV 
E) 39.36 eV B

Question 4

A neutral atom has electron configuration 1s22s22p63s23p2. What element is this?

Accepted Answer

A) carbon 
B) iron 
C) nitrogen 
D) silicon 
E) germanium 
A) carbon 
B) iron 
C) nitrogen 
D) silicon 
E) germanium

Question 5

What is the maximum number of electrons that can occupy the g subshell?

Accepted Answer

A) 10 
B) 14 
C) 18 
D) 22 
E) 2 
A) 10 
B) 14 
C) 18 
D) 22 
E) 2

Question 6

In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.8 eV, what is the wavelength of the emitted photon?

Accepted Answer

A) 350 nm 
B) 470 nm 
C) 650 nm 
D) 690 nm 
E) 960 nm 
A) 350 nm 
B) 470 nm 
C) 650 nm 
D) 690 nm 
E) 960 nm

Question 7

The number of electrons in a neutral atom is called its

Accepted Answer

A) principal quantum number. 
B) orbital quantum number. 
C) magnetic quantum number. 
D) atomic number. 
E) none of the above answers. 
A) principal quantum number. 
B) orbital quantum number. 
C) magnetic quantum number. 
D) atomic number. 
E) none of the above answers.

Question 8

Which one of the following is the correct electronic configuration for carbon?

Accepted Answer

A) 1 s22 s22 p2 
B) 1 s12 p1 
C) 1 s12 s22 p1 
D) 1 s12 s12 p1 
E) 1 s22 s22 p4 
A) 1 s22 s22 p2 
B) 1 s12 p1 
C) 1 s12 s22 p1 
D) 1 s12 s12 p1 
E) 1 s22 s22 p4

Question 9

The "inverted population" necessary for laser action

Accepted Answer

A) refers to the negative energy levels of electrons. 
B) comes from upside-down levels in certain atoms. 
C) refers to the higher energy state being populated more than one below it. 
D) is another way of saying "coherent." 
E) is another way of saying "incoherent." 
A) refers to the negative energy levels of electrons. 
B) comes from upside-down levels in certain atoms. 
C) refers to the higher energy state being populated more than one below it. 
D) is another way of saying "coherent." 
E) is another way of saying "incoherent."

Question 10

In making a transition from state n = 1 to state n = 2, the hydrogen atom must

Accepted Answer

A) absorb a photon of energy 10.2 eV. 
B) emit a photon of energy 10.2 eV. 
C) absorb a photon of energy 13.58 eV. 
D) emit a photon of energy 13.58 eV. 
E) none of the given answers are correct. 
A) absorb a photon of energy 10.2 eV. 
B) emit a photon of energy 10.2 eV. 
C) absorb a photon of energy 13.58 eV. 
D) emit a photon of energy 13.58 eV. 
E) none of the given answers are correct.

Question 11

A neutral atom has an electron configuration of 1s22s22p63s23p2. What is its atomic number?

Accepted Answer

A) 5 
B) 11 
C) 14 
D) 20 
E) 26 
A) 5 
B) 11 
C) 14 
D) 20 
E) 26

Question 12

In a hydrogen atom, the difference in the energy between adjacent orbit radii increases with the increasing value of n.

Accepted Answer

A) True 
 B)False

Question 13

The binding energy of the hydrogen atom in its ground state is -13.6 eV. What is the energy when it is in the n = 5 state?

Accepted Answer

A) 2.72 eV 
B) -2.72 eV 
C) 0.544 eV 
D) -0.544 eV 
E) None of the given answers are correct. 
A) 2.72 eV 
B) -2.72 eV 
C) 0.544 eV 
D) -0.544 eV 
E) None of the given answers are correct.

Question 14

The distance between adjacent orbit radii in a hydrogen atom

Accepted Answer

A) increases with increasing values of n. 
B) decreases with increasing values of n. 
C) remains constant for all values of n. 
D) varies randomly with increasing values of n. 
A) increases with increasing values of n. 
B) decreases with increasing values of n. 
C) remains constant for all values of n. 
D) varies randomly with increasing values of n.

Question 15

State the Pauli exclusion principle.

Accepted Answer

No two electrons in

Question 16

The word LASER is an acronym for

Accepted Answer

A) Light Altered Spectra of Energy Radiated. 
B) Latent Source of Enhanced Radiation. 
C) Light Amplification by the Stimulated Emission of Radiation. 
D) Light Absorbed States of Energetic Resonance. 
E) none of the above answers. 
A) Light Altered Spectra of Energy Radiated. 
B) Latent Source of Enhanced Radiation. 
C) Light Amplification by the Stimulated Emission of Radiation. 
D) Light Absorbed States of Energetic Resonance. 
E) none of the above answers.

Question 17

The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy states involved in laser action?

Accepted Answer

A) 1.537 eV 
B) 1.646 eV 
C) 1.786 eV 
D) 1.812 eV 
E) 3.572 eV 
A) 1.537 eV 
B) 1.646 eV 
C) 1.786 eV 
D) 1.812 eV 
E) 3.572 eV

Question 18

The probability of finding an electron in a hydrogen atom is directly proportional to its

Accepted Answer

A) energy. 
B) momentum. 
C) wave function. 
D) square of the wave function. 
E) none of the above answers. 
A) energy. 
B) momentum. 
C) wave function. 
D) square of the wave function. 
E) none of the above answers.

Question 19

If the hydrogen atom is in an n = 3, ℓ =2 state, what is a possible value for ℓ after a photon is emitted?

Accepted Answer

A) 3 
B) 0 
C) 4 
D) 2 
E) 1 
A) 3 
B) 0 
C) 4 
D) 2 
E) 1

Question 20

The maximum number of electron states with a principal quantum number n = 3 is 15.

Accepted Answer

A) True 
 B)False

Exam 39: Quantum Mechanics of Atoms

A hydrogen atom is in the 6h state. Which of the following could be an orbital quantum number?

The principal quantum number can have any integer value ranging from

In a helium-neon laser the emissions occur from transitions between two excited states in neon, one being at 20.66 eV above the ground state and the other being 18.70 eV above ground. What is the energy of the photons emitted by this laser?

A neutral atom has electron configuration 1s22s22p63s23p2. What element is this?

What is the maximum number of electrons that can occupy the g subshell?

In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.8 eV, what is the wavelength of the emitted photon?

The number of electrons in a neutral atom is called its

Which one of the following is the correct electronic configuration for carbon?

The "inverted population" necessary for laser action

In making a transition from state n = 1 to state n = 2, the hydrogen atom must

A neutral atom has an electron configuration of 1s22s22p63s23p2. What is its atomic number?

In a hydrogen atom, the difference in the energy between adjacent orbit radii increases with the increasing value of n.

The binding energy of the hydrogen atom in its ground state is -13.6 eV. What is the energy when it is in the n = 5 state?

The distance between adjacent orbit radii in a hydrogen atom

State the Pauli exclusion principle.

The word LASER is an acronym for

The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy states involved in laser action?

The probability of finding an electron in a hydrogen atom is directly proportional to its

If the hydrogen atom is in an n = 3, ℓ =2 state, what is a possible value for ℓ after a photon is emitted?

The maximum number of electron states with a principal quantum number n = 3 is 15.

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

Kinematics in Two or Three Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Using Newtons Laws: Friction, Circular Motion, Drag Forces

Gravitation and Newtons6 Synthesis

Work and Energy

Conservation of Energy

Linear Momentum

Rotational Motion

Angular Momentum; General Rotation

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations

Wave Motion

Sound

Temperature, Thermal Expansion, and the Ideal Gas Law

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance, Dielectrics, Electric Energy Storage

Electric Currents and Resistance

Dc Circuits

Magnetism

Sources of Magnetic Field

Electromagnetic Induction and Faradays Law

Inductance, Electromagnetic Oscillations, and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Light: Reflection and Refraction

Lenses and Optical Instruments

The Wave Nature of Light; Interference

Diffraction and Polarization

Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy: Efects and Uses of Radiation

Elementary Particle

Astrophysics and Cosmology

Filters

A neutral atom has electron configuration 1s²2s²2p⁶3s²3p². What element is this?

A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p². What is its atomic number?