Question 1

In the United States, the letter A identifies the main group elements and the letter B indicates the transition metal elements of the periodic table.

Accepted Answer

A) True 
 B)False  True

Question 2

In which group do all atoms have eight valence electrons in the ground state?

Accepted Answer

A)  alkali metals 
B)  alkaline earth metals 
C)  halogens 
D)  noble gases 
A)  alkali metals 
B)  alkaline earth metals 
C)  halogens 
D)  noble gases D

Question 3

Carbon and nitrogen are isotopes of each other.

Accepted Answer

A) True 
 B)False  False

Question 4

How many protons are there in a phosphorus atom?

Accepted Answer

A)  31 
B)  15 
C)  17 
D)  46 
A)  31 
B)  15 
C)  17 
D)  46

Question 5

The line spectra of atoms provides experimental evidence for

Accepted Answer

A)  the organization of particles in the nucleus of atoms. 
B)  the number of protons. 
C)  the arrangement of electrons. 
D)  all of the above 
A)  the organization of particles in the nucleus of atoms. 
B)  the number of protons. 
C)  the arrangement of electrons. 
D)  all of the above

Question 6

Write the electron configuration for Mg.

Accepted Answer

Magnesium (Mg) is the 12th element on th

Question 7

Relative to the mass of the nucleus of an atom, the mass of the electron is

Accepted Answer

A)  always much smaller. 
B)  always much larger. 
C)  about the same. 
D)  dependent upon the element. 
A)  always much smaller. 
B)  always much larger. 
C)  about the same. 
D)  dependent upon the element.

Question 8

The model for the atom which has electrons in fixed orbits was developed by

Accepted Answer

A)  Rutherford. 
B)  Schrödinger. 
C)  Bohr. 
D)  Einstein. 
A)  Rutherford. 
B)  Schrödinger. 
C)  Bohr. 
D)  Einstein.

Question 9

Identify the uranium isotope.

Accepted Answer

A)    U 
B)    Np 
C)    Pa 
D)    Th 
A)    U 
B)    Np 
C)    Pa 
D)    Th

Question 10

How many neutrons are there in the sulfur-31 isotope?

Accepted Answer

A)  47 
B)  31 
C)  15 
D)  16 
A)  47 
B)  31 
C)  15 
D)  16

Question 11

An anode is a

Accepted Answer

A)  negatively charged ion. 
B)  positively charged ion. 
C)  negative electrode. 
D)  positive electrode. 
A)  negatively charged ion. 
B)  positively charged ion. 
C)  negative electrode. 
D)  positive electrode.

Question 12

The isotope of carbon commonly referred to as "carbon-14" is

Accepted Answer

A)    C. 
B)    C. 
C)    C. 
D)    Si. 
A)    C. 
B)    C. 
C)    C. 
D)    Si.

Question 13

Which element is a metal?

Accepted Answer

A)  Mg 
B)  S 
C)  P 
D)  Br 
A)  Mg 
B)  S 
C)  P 
D)  Br

Question 14

Which person(s) won two Nobel prizes (one in physics; the other in chemistry) for work with radioactivity?

Accepted Answer

A)  Antoine Henri Becquerel 
B)  Marie Sklodowska Curie 
C)  Pierre Curie 
D)  Marie and Pierre Curie 
A)  Antoine Henri Becquerel 
B)  Marie Sklodowska Curie 
C)  Pierre Curie 
D)  Marie and Pierre Curie

Question 15

Which is a result of the mathematically based quantum view of electrons in atoms?

Accepted Answer

A)  The position of every electron in an atom is precisely known. 
B)  All electrons have the same position in atoms. 
C)  The most probable position of each electron can be predicted. 
D)  The position of electrons in atoms is not important. 
A)  The position of every electron in an atom is precisely known. 
B)  All electrons have the same position in atoms. 
C)  The most probable position of each electron can be predicted. 
D)  The position of electrons in atoms is not important.

Question 16

Which type of radioactivity has essentially no mass?

Accepted Answer

A)  alpha, α 
B)  beta, β 
C)  gamma, γ 
D)  lambda, λ 
A)  alpha, α 
B)  beta, β 
C)  gamma, γ 
D)  lambda, λ

Question 17

The neutron has

Accepted Answer

A)  the same approximate mass and charge as an electron. 
B)  the same approximate mass and charge as a proton. 
C)  the same approximate mass as a proton, but no charge. 
D)  the same approximate mass as an electron, but no charge. 
A)  the same approximate mass and charge as an electron. 
B)  the same approximate mass and charge as a proton. 
C)  the same approximate mass as a proton, but no charge. 
D)  the same approximate mass as an electron, but no charge.

Question 18

The positive charges in an atom are spread uniformly throughout the entire atom.

Accepted Answer

A) True 
 B)False

Question 19

Radioactivity is the spontaneous emission of radiation from an unstable element.

Accepted Answer

A) True 
 B)False

Question 20

William Crookes passed an electric current through a tightly sealed tube. The current generated a green beam of light (due to fluorescence as the beam struck a zinc sulfide surface) which seemed to pass from one electrode to the other. This beam was called a cathode ray because

Accepted Answer

A)  it seemed to leave the anode and travel to the cathode. 
B)  it seemed to leave the cathode and travel to the anode. 
C)  it seemed to travel from the zinc sulfide screen to the cathode. 
D)  it seemed to travel from the zinc sulfide screen to the anode. 
A)  it seemed to leave the anode and travel to the cathode. 
B)  it seemed to leave the cathode and travel to the anode. 
C)  it seemed to travel from the zinc sulfide screen to the cathode. 
D)  it seemed to travel from the zinc sulfide screen to the anode.

Exam 3: Atomic Structure

In the United States, the letter A identifies the main group elements and the letter B indicates the transition metal elements of the periodic table.

In which group do all atoms have eight valence electrons in the ground state?

Carbon and nitrogen are isotopes of each other.

How many protons are there in a phosphorus atom?

The line spectra of atoms provides experimental evidence for

Write the electron configuration for Mg.

Relative to the mass of the nucleus of an atom, the mass of the electron is

The model for the atom which has electrons in fixed orbits was developed by

Identify the uranium isotope.

How many neutrons are there in the sulfur-31 isotope?

An anode is a

The isotope of carbon commonly referred to as "carbon-14" is

Which element is a metal?

Which person(s) won two Nobel prizes (one in physics; the other in chemistry) for work with radioactivity?

Which is a result of the mathematically based quantum view of electrons in atoms?

Which type of radioactivity has essentially no mass?

The neutron has

The positive charges in an atom are spread uniformly throughout the entire atom.

Radioactivity is the spontaneous emission of radiation from an unstable element.

William Crookes passed an electric current through a tightly sealed tube. The current generated a green beam of light (due to fluorescence as the beam struck a zinc sulfide surface) which seemed to pass from one electrode to the other. This beam was called a cathode ray because

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