Question 1

Which of the following represents the quantum nature of light?

Accepted Answer

A) atom 
B) electron 
C) ion 
D) photon 
E) proton 
A) atom 
B) electron 
C) ion 
D) photon 
E) proton

Question 2

Using atomic notation,indicate the isotope having 26 p+,32 n0,and 26 e-.

Accepted Answer

A)    Fe 
B)    Fe 
C)    Fe 
D)    S 
E)    S 
A)    Fe 
B)    Fe 
C)    Fe 
D)    S 
E)    S

Question 3

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂ 3p6 4S₂ 3d10?

Accepted Answer

A) Ca 
B) Cd 
C) Kr 
D) Zn 
E) none of the above 
A) Ca 
B) Cd 
C) Kr 
D) Zn 
E) none of the above

Question 4

Which of the following gaseous elements produces a reddish-orange light in an advertising display?

Accepted Answer

A) helium 
B) hydrogen 
C) mercury 
D) neon 
E) all of the above 
A) helium 
B) hydrogen 
C) mercury 
D) neon 
E) all of the above

Question 5

What is the maximum number of electrons that can occupy the 2nd principal energy level?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 8 
E) none of the above 
A) 1 
B) 2 
C) 4 
D) 8 
E) none of the above

Question 6

How many energy sublevels theoretically exist in the 6th energy level?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above

Question 7

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 4 to 2?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above

Question 8

What is the approximate diameter of an atomic nucleus?

Accepted Answer

A) 10-13 cm 
B) 10-8 cm 
C) 1 cm 
D) 108 cm 
E) 1013 cm 
A) 10-13 cm 
B) 10-8 cm 
C) 1 cm 
D) 108 cm 
E) 1013 cm

Question 9

Given that the only naturally occurring isotope of gold is 197Au,what is its isotopic mass? (Hint: Refer to the Periodic Table. )

Accepted Answer

A) 79.00 amu 
B) 117.97 amu 
C) 118.00 amu 
D) 196.97 amu 
E) 275.97 amu 
A) 79.00 amu 
B) 117.97 amu 
C) 118.00 amu 
D) 196.97 amu 
E) 275.97 amu

Question 10

How many energy sublevels exist within the 3rd principal energy level?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above

Question 11

What term best describes the shape of an s orbital?

Accepted Answer

A) sphere 
B) dumbbell 
C) clover 
D) ellipse 
E) wave 
A) sphere 
B) dumbbell 
C) clover 
D) ellipse 
E) wave

Question 12

Which of the following wavelengths of light is in the visible region of the radiant energy spectrum?

Accepted Answer

A) 250 nm 
B) 550 nm 
C) 850 nm 
D) all of the above 
E) none of the above 
A) 250 nm 
B) 550 nm 
C) 850 nm 
D) all of the above 
E) none of the above

Question 13

Which of the following gaseous elements produces a reddish-purple light in an advertising display?

Accepted Answer

A) helium 
B) hydrogen 
C) mercury 
D) neon 
E) all of the above 
A) helium 
B) hydrogen 
C) mercury 
D) neon 
E) all of the above

Question 14

Which of the following energy-level changes for an electron is least energetic?

Accepted Answer

A) 2 → 1 
B) 3 → 2 
C) 4 → 3 
D) 5 → 4 
E) All changes have the same energy. 
A) 2 → 1 
B) 3 → 2 
C) 4 → 3 
D) 5 → 4 
E) All changes have the same energy.

Question 15

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 5 to 3?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 5 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 5 
E) none of the above

Question 16

Boron occurs naturally as 10B and 11B.Which isotope is more abundant? (Hint: Refer to the Periodic Table. )

Accepted Answer

A) boron-5 
B) boron-6 
C) boron-10 
D) boron-11 
E) none of the above 
A) boron-5 
B) boron-6 
C) boron-10 
D) boron-11 
E) none of the above

Question 17

Which of the following colors of light has the highest velocity?

Accepted Answer

A) red 
B) orange 
C) yellow 
D) green 
E) All colors have the same velocity. 
A) red 
B) orange 
C) yellow 
D) green 
E) All colors have the same velocity.

Question 18

How many energy sublevels exist within the 1st principal energy level?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 4 
E) none of the above

Question 19

Which of the following was established by John Dalton?

Accepted Answer

A) atomic theory 
B) quantum theory 
C) law of conservation of mass 
D) law of conservation of energy 
E) law of conservation of mass and energy 
A) atomic theory 
B) quantum theory 
C) law of conservation of mass 
D) law of conservation of energy 
E) law of conservation of mass and energy

Question 20

Which of the following orbitals is the lowest energy?

Accepted Answer

A) 1s 
B) 2s 
C) 3s 
D) 4s 
E) all s orbitals are the same energy 
A) 1s 
B) 2s 
C) 3s 
D) 4s 
E) all s orbitals are the same energy

Exam 4: Models of the Atom

Which of the following represents the quantum nature of light?

Using atomic notation,indicate the isotope having 26 p+,32 n0,and 26 e-.

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂ 3p6 4S₂ 3d10?

Which of the following gaseous elements produces a reddish-orange light in an advertising display?

What is the maximum number of electrons that can occupy the 2nd principal energy level?

How many energy sublevels theoretically exist in the 6th energy level?

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 4 to 2?

What is the approximate diameter of an atomic nucleus?

Given that the only naturally occurring isotope of gold is 197Au,what is its isotopic mass? (Hint: Refer to the Periodic Table. )

How many energy sublevels exist within the 3rd principal energy level?

What term best describes the shape of an s orbital?

Which of the following wavelengths of light is in the visible region of the radiant energy spectrum?

Which of the following gaseous elements produces a reddish-purple light in an advertising display?

Which of the following energy-level changes for an electron is least energetic?

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 5 to 3?

Boron occurs naturally as 10B and 11B.Which isotope is more abundant? (Hint: Refer to the Periodic Table. )

Which of the following colors of light has the highest velocity?

How many energy sublevels exist within the 1st principal energy level?

Which of the following was established by John Dalton?

Which of the following orbitals is the lowest energy?

Introduction to Chemistry

The Metric System

Matter and Energy

The Periodic Table

Language of Chemistry

Chemical Reactions

The Mole Concept

Chemical Equation Calculations

Gases

Liquids and Solids

Chemical Bonding

Solutions

Acids and Bases

Advanced Problem Solving

Chemical Equilibrium

Oxidation and Reduction

Nuclear Chemistry

Organic Chemistry

Biochemistry

Interlude: Prerequisite Science Skills

Filters