Question 1

Which of the following elements does not have a stable isotope? (Hint: Refer to the Periodic Table. )

Accepted Answer

A) Na 
B) Ne 
C) Ni 
D) No 
E) none of the above 
A) Na 
B) Ne 
C) Ni 
D) No 
E) none of the above

Question 2

What is the term for an electron energy level that results from splitting a main energy level?

Accepted Answer

A) energy sublevel 
B) orbital 
C) shell 
D) subshell 
E) none of the above 
A) energy sublevel 
B) orbital 
C) shell 
D) subshell 
E) none of the above

Question 3

Which of the following energy level changes in a hydrogen atom produces a visible spectral line?

Accepted Answer

A) 3 → 2 
B) 4 → 2 
C) 5 → 2 
D) all of the above 
E) none of the above 
A) 3 → 2 
B) 4 → 2 
C) 5 → 2 
D) all of the above 
E) none of the above

Question 4

Which electron sublevel follows the 5p sublevel according to increasing energy?

Accepted Answer

A) 4d 
B) 5d 
C) 5s 
D) 6s 
E) 6p 
A) 4d 
B) 5d 
C) 5s 
D) 6s 
E) 6p

Question 5

Which of the following elements does not have a stable isotope? (Hint: Refer to the Periodic Table. )

Accepted Answer

A) Ta 
B) Tc 
C) Te 
D) Ti 
E) none of the above 
A) Ta 
B) Tc 
C) Te 
D) Ti 
E) none of the above

Question 6

What is the term for two atoms of the same element that differ by the number of neutrons in the nucleus?

Accepted Answer

A) atomic mass units 
B) isotopes 
C) nucleons 
D) photons 
E) none of the above 
A) atomic mass units 
B) isotopes 
C) nucleons 
D) photons 
E) none of the above

Question 7

How many neutrons are in the nucleus of an atom of 200Hg?

Accepted Answer

A) 80 
B) 120 
C) 200 
D) 280 
E) none of the above 
A) 80 
B) 120 
C) 200 
D) 280 
E) none of the above

Question 8

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

Accepted Answer

A) 380 nm 
B) 580 nm 
C) 780 nm 
D) 980 nm 
E) all of the above 
A) 380 nm 
B) 580 nm 
C) 780 nm 
D) 980 nm 
E) all of the above

Question 9

What is the maximum number of electrons that can occupy a d energy sublevel?

Accepted Answer

A) 2 
B) 6 
C) 10 
D) 14 
E) none of the above 
A) 2 
B) 6 
C) 10 
D) 14 
E) none of the above

Question 10

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂ 3p6 4S₂ 3d10 4p6 5S₂ 4d10 5p2?

Accepted Answer

A) Sr 
B) Zr 
C) Sn 
D) Hf 
E) none of the above 
A) Sr 
B) Zr 
C) Sn 
D) Hf 
E) none of the above

Question 11

Which of the following is the best description of the Bohr atom?

Accepted Answer

A) an indivisible,indestructible particle 
B) a homogeneous sphere of "plum pudding" 
C) a sphere with a heavy,dense nucleus surrounded by electrons 
D) a sphere with a heavy,dense nucleus circled by electrons in orbits 
E) a sphere with a heavy,dense nucleus surrounded by electron orbitals 
A) an indivisible,indestructible particle 
B) a homogeneous sphere of "plum pudding" 
C) a sphere with a heavy,dense nucleus surrounded by electrons 
D) a sphere with a heavy,dense nucleus circled by electrons in orbits 
E) a sphere with a heavy,dense nucleus surrounded by electron orbitals

Question 12

What is the term for the number of times a light wave travels a complete cycle in one second?

Accepted Answer

A) energy 
B) frequency 
C) velocity 
D) wavelength 
E) none of the above 
A) energy 
B) frequency 
C) velocity 
D) wavelength 
E) none of the above

Question 13

Which electron sublevel follows the 4p sublevel according to increasing energy?

Accepted Answer

A) 3d 
B) 4d 
C) 4s 
D) 5s 
E) 5p 
A) 3d 
B) 4d 
C) 4s 
D) 5s 
E) 5p

Question 14

What is the term for the atomic model that describes the energy of an electron in terms of its probable location about the nucleus?

Accepted Answer

A) Bohr atom 
B) nuclear atom 
C) planetary atom 
D) quantum mechanical atom 
E) none of the above 
A) Bohr atom 
B) nuclear atom 
C) planetary atom 
D) quantum mechanical atom 
E) none of the above

Question 15

The scattering of alpha particles by a thin metal foil can be described by the analogy "like a missile shot through our solar system." If the missile represents an alpha particle,what do planets in our solar system represent?

Accepted Answer

A) atoms 
B) electrons 
C) neutrons 
D) nuclei 
E) protons 
A) atoms 
B) electrons 
C) neutrons 
D) nuclei 
E) protons

Question 16

How many neutrons are in the nucleus of an atom of iron-56?

Accepted Answer

A) 26 
B) 30 
C) 56 
D) 82 
E) none of the above 
A) 26 
B) 30 
C) 56 
D) 82 
E) none of the above

Question 17

In 1861 a green line was observed in the spectrum of selenium ore that led to the discovery of the element thallium.Which of the following was responsible for the green line in the spectrum?

Accepted Answer

A) excited electrons jumping to a higher energy level 
B) excited electrons dropping to a lower energy level 
C) excited protons jumping to a higher energy level 
D) excited protons dropping to a lower energy level 
E) none of the above 
A) excited electrons jumping to a higher energy level 
B) excited electrons dropping to a lower energy level 
C) excited protons jumping to a higher energy level 
D) excited protons dropping to a lower energy level 
E) none of the above

Question 18

What is the current reference isotope for the atomic mass scale?

Accepted Answer

A) hydrogen-1 
B) helium-4 
C) carbon-12 
D) oxygen-16 
E) none of the above 
A) hydrogen-1 
B) helium-4 
C) carbon-12 
D) oxygen-16 
E) none of the above

Question 19

What is the term for the weighted average mass of all the naturally occurring isotopes of an element?

Accepted Answer

A) atomic notation 
B) atomic number 
C) atomic mass 
D) mass number 
E) none of the above 
A) atomic notation 
B) atomic number 
C) atomic mass 
D) mass number 
E) none of the above

Question 20

What is the maximum number of electrons in a 4p orbital?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 6 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 6 
E) none of the above

Exam 4: Models of the Atom

Which of the following elements does not have a stable isotope? (Hint: Refer to the Periodic Table. )

What is the term for an electron energy level that results from splitting a main energy level?

Which of the following energy level changes in a hydrogen atom produces a visible spectral line?

Which electron sublevel follows the 5p sublevel according to increasing energy?

Which of the following elements does not have a stable isotope? (Hint: Refer to the Periodic Table. )

What is the term for two atoms of the same element that differ by the number of neutrons in the nucleus?

How many neutrons are in the nucleus of an atom of 200Hg?

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

What is the maximum number of electrons that can occupy a d energy sublevel?

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂ 3p6 4S₂ 3d10 4p6 5S₂ 4d10 5p2?

Which of the following is the best description of the Bohr atom?

What is the term for the number of times a light wave travels a complete cycle in one second?

Which electron sublevel follows the 4p sublevel according to increasing energy?

What is the term for the atomic model that describes the energy of an electron in terms of its probable location about the nucleus?

The scattering of alpha particles by a thin metal foil can be described by the analogy "like a missile shot through our solar system." If the missile represents an alpha particle,what do planets in our solar system represent?

How many neutrons are in the nucleus of an atom of iron-56?

In 1861 a green line was observed in the spectrum of selenium ore that led to the discovery of the element thallium.Which of the following was responsible for the green line in the spectrum?

What is the current reference isotope for the atomic mass scale?

What is the term for the weighted average mass of all the naturally occurring isotopes of an element?

What is the maximum number of electrons in a 4p orbital?

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