Question 1

"No two electrons in an atom can have the same four quantum numbers" is a statement of

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. A

Question 2

Write the ground state electron configuration for Cr.

Accepted Answer

[Ar] 4s¹3d⁵

Question 3

Which element has the following ground-state electron configuration? [Kr]5s24d105p3

Accepted Answer

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

Question 4

How many unpaired electrons does a ground-state atom of sulfur have?

Accepted Answer

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

Question 5

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

Question 6

When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength $\lambda$ is emitted. A proton having this same wavelength would have a velocity of

Accepted Answer

A) 3.87 m/s. 
B) 5990 m/s. 
C) 1.21 * 10-7 m/s. 
D) 3.26 m/s. 
E) 5.99 m/s. 
A) 3.87 m/s. 
B) 5990 m/s. 
C) 1.21 * 10-7 m/s. 
D) 3.26 m/s. 
E) 5.99 m/s.

Question 7

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 8

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 9

The electron configuration of a ground-state copper atom is

Accepted Answer

A) [Ar]4s24d4. 
B) [Ar]4s24p63d3. 
C) [Ar]4s23d9. 
D) [Ar]3d9. 
E) [Ar]4s13d10. 
A) [Ar]4s24d4. 
B) [Ar]4s24p63d3. 
C) [Ar]4s23d9. 
D) [Ar]3d9. 
E) [Ar]4s13d10.

Question 10

The orbital diagram for a ground-state oxygen atom is

Accepted Answer

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

Question 11

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.

Question 12

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

Accepted Answer

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

Question 13

Complete this sentence: Atoms emit visible and ultraviolet light

Accepted Answer

A) as electrons jump from lower energy levels to higher levels. 
B) as the atoms condense from a gas to a liquid. 
C) as electrons jump from higher energy levels to lower levels. 
D) as they are heated and the solid melts to form a liquid. 
E) as the electrons move about the atom within an orbit. 
A) as electrons jump from lower energy levels to higher levels. 
B) as the atoms condense from a gas to a liquid. 
C) as electrons jump from higher energy levels to lower levels. 
D) as they are heated and the solid melts to form a liquid. 
E) as the electrons move about the atom within an orbit.

Question 14

Which of the following ground-state atoms is diamagnetic?

Accepted Answer

A) Ca 
B) As 
C) Cu 
D) Fe 
E) none of these 
A) Ca 
B) As 
C) Cu 
D) Fe 
E) none of these

Question 15

The frequency of the emitted light from a cesium atom is an intensive property.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is diamagnetic both in its ground state and in all of its excited states?

Accepted Answer

A) Mg 
B) Ne 
C) Cu 
D) Zn 
E) none of these 
A) Mg 
B) Ne 
C) Cu 
D) Zn 
E) none of these

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 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 18

What is the total number of electrons possible in the 6s orbital?

Accepted Answer

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

Question 19

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 20

Which of the following is the ground-state electron configuration of a calcium atom?

Accepted Answer

A) [Ne]3s2 
B) [Ne]3s23p6 
C) [Ar]4s13d1 
D) [Ar]4s2 
E) [Ar]3d2 
A) [Ne]3s2 
B) [Ne]3s23p6 
C) [Ar]4s13d1 
D) [Ar]4s2 
E) [Ar]3d2

Exam 7: The Electronic Structure of Atoms

"No two electrons in an atom can have the same four quantum numbers" is a statement of

Write the ground state electron configuration for Cr.

Which element has the following ground-state electron configuration? [Kr]5s24d105p3

How many unpaired electrons does a ground-state atom of sulfur have?

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?

When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength λ\lambdaλ is emitted. A proton having this same wavelength would have a velocity of

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

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

The electron configuration of a ground-state copper atom is

The orbital diagram for a ground-state oxygen atom is

Transition metal elements have atoms or ions with partially filled

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

Complete this sentence: Atoms emit visible and ultraviolet light

Which of the following ground-state atoms is diamagnetic?

The frequency of the emitted light from a cesium atom is an intensive property.

Which of the following is diamagnetic both in its ground state and in all of its excited states?

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?

What is the total number of electrons possible in the 6s orbital?

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

Which of the following is the ground-state electron configuration of a calcium atom?

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

Which element has the following ground-state electron configuration? [Kr]5s²4d¹⁰5p³

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?

When the electron in a hydrogen atom falls from its first excited energy level to the ground state energy level, a photon with wavelength $\lambda$ is emitted. A proton having this same wavelength would have a velocity of

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