Question 1

In attempting to explain the line spectrum of hydrogen, Bohr suggested that the energy of electrons in atoms is

Accepted Answer

A)  zero. 
B)  infinite. 
C)  continuous. 
D)  quantized. 
A)  zero. 
B)  infinite. 
C)  continuous. 
D)  quantized.

Question 2

Essentially all of the mass of an atom is due to the

Accepted Answer

A)  protons. 
B)  neutrons. 
C)  nucleons. 
D)  electrons. 
A)  protons. 
B)  neutrons. 
C)  nucleons. 
D)  electrons.

Question 3

The noble gases are a unique group of elements. They are recognized as unique due to the fact that they are

Accepted Answer

A)  all gases at room temperature. 
B)  extremely stable and unreactive. 
C)  the most reactive member of their period. 
D)  named after Nobel prize winners. 
A)  all gases at room temperature. 
B)  extremely stable and unreactive. 
C)  the most reactive member of their period. 
D)  named after Nobel prize winners.

Question 4

A d sublevel can hold a maximum of

Accepted Answer

A)  2 electrons. 
B)  6 electrons. 
C)  10 electrons. 
D)  14 electrons. 
A)  2 electrons. 
B)  6 electrons. 
C)  10 electrons. 
D)  14 electrons.

Question 5

A line spectrum is NOT

Accepted Answer

A)  continuous. 
B)  discrete. 
C)  unique. 
D)  an energy profile. 
A)  continuous. 
B)  discrete. 
C)  unique. 
D)  an energy profile.

Question 6

Which element is an inner transition metal?

Accepted Answer

A)  Ba 
B)  K 
C)  La 
D)  Zr 
A)  Ba 
B)  K 
C)  La 
D)  Zr

Question 7

Which is an IMPOSSIBLE electron configuration?

Accepted Answer

A)  1s2 2s2 
B)  1s2 2s2 2p4 
C)  1s3 2s2 2p5 
D)  1s2 2s2 2p6 3s2 
A)  1s2 2s2 
B)  1s2 2s2 2p4 
C)  1s3 2s2 2p5 
D)  1s2 2s2 2p6 3s2

Question 8

In which group do all atoms have two 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

Question 9

Which subatomic particles have approximately the same mass?

Accepted Answer

A)  electrons and neutrons 
B)  electrons and protons 
C)  neutrons and protons 
D)  electrons, neutrons and protons 
A)  electrons and neutrons 
B)  electrons and protons 
C)  neutrons and protons 
D)  electrons, neutrons and protons

Question 10

How many electrons are there in a Sb atom?

Accepted Answer

A)  51 
B)  122 
C)  71 
D)  33 
A)  51 
B)  122 
C)  71 
D)  33

Question 11

An f sublevel can hold a maximum of

Accepted Answer

A)  2 electrons. 
B)  6 electrons. 
C)  10 electrons. 
D)  14 electrons. 
A)  2 electrons. 
B)  6 electrons. 
C)  10 electrons. 
D)  14 electrons.

Question 12

Write the electron configuration for bromine.

Accepted Answer

Bromine (Br) is the 35th element on the

Question 13

A neutral atom has the same number of

Accepted Answer

A)  electrons and neutrons. 
B)  electrons and nucleons. 
C)  electrons and protons. 
D)  neutrons and protons. 
A)  electrons and neutrons. 
B)  electrons and nucleons. 
C)  electrons and protons. 
D)  neutrons and protons.

Question 14

The maximum number of electrons that may reside in the n = 2 energy level is

Accepted Answer

A)  6. 
B)  8. 
C)  2. 
D)  16. 
A)  6. 
B)  8. 
C)  2. 
D)  16.

Question 15

When combined with Thomson's determination of the mass to charge ratio of the electron, Millikan's experimental work allowed for the determination of the

Accepted Answer

A)  charge on the electron. 
B)  mass of the electron. 
C)  speed of the electron. 
D)  all of the above 
A)  charge on the electron. 
B)  mass of the electron. 
C)  speed of the electron. 
D)  all of the above

Question 16

All noble gases have ________ valence electrons.

Accepted Answer

A)  three 
B)  five 
C)  seven 
D)  eight 
A)  three 
B)  five 
C)  seven 
D)  eight

Question 17

How many protons are in this isotope of uranium?   U

Accepted Answer

The answer of How many protons are in this isotope...

Question 18

The specific pattern of colors emitted by excited atoms is called a

Accepted Answer

A)  rainbow. 
B)  line spectrum. 
C)  continuous spectrum. 
D)  cathode ray. 
A)  rainbow. 
B)  line spectrum. 
C)  continuous spectrum. 
D)  cathode ray.

Question 19

The number of protons in an atom is called the

Accepted Answer

A)  atomic mass. 
B)  atomic number. 
C)  atomic weight. 
D)  mass number. 
A)  atomic mass. 
B)  atomic number. 
C)  atomic weight. 
D)  mass number.

Question 20

Some positively charged alpha particles were deflected rather than passing straight through thin metal foil. To explain this, Rutherford postulated that the nucleus of the atom must be positive.

Accepted Answer

A) True 
 B)False

Exam 3: Atomic Structure

In attempting to explain the line spectrum of hydrogen, Bohr suggested that the energy of electrons in atoms is

Essentially all of the mass of an atom is due to the

The noble gases are a unique group of elements. They are recognized as unique due to the fact that they are

A d sublevel can hold a maximum of

A line spectrum is NOT

Which element is an inner transition metal?

Which is an IMPOSSIBLE electron configuration?

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

Which subatomic particles have approximately the same mass?

How many electrons are there in a Sb atom?

An f sublevel can hold a maximum of

Write the electron configuration for bromine.

A neutral atom has the same number of

The maximum number of electrons that may reside in the n = 2 energy level is

When combined with Thomson's determination of the mass to charge ratio of the electron, Millikan's experimental work allowed for the determination of the

All noble gases have ________ valence electrons.

How many protons are in this isotope of uranium? U

The specific pattern of colors emitted by excited atoms is called a

The number of protons in an atom is called the

Some positively charged alpha particles were deflected rather than passing straight through thin metal foil. To explain this, Rutherford postulated that the nucleus of the atom must be positive.

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