Question 1

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

Accepted Answer

A)   alkali metals
B)   alkaline earth metals
C)   halogens
D)   noble gasesE) None of the above
F) B) and C)

Question 2

Which experimental observation led scientists to speculate that cathode rays contained particles that were constituents of all matter?

Accepted Answer

A)   The rays were deflected by electrical fields.
B)   The rays were deflected by magnetic fields.
C)   The rays were independent of the type of gas in the vacuum tube.
D)   All of the above provided evidence of the "fundamental" nature of cathode rays.E) A) and B)
F) B) and D)

Question 3

How many neutrons are in this isotope of chlorine?  Cl

Accepted Answer

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

Question 4

Identify the particle that is the least penetrating.

Accepted Answer

A)   alpha, α
B)   beta, β
C)   gamma, γ
D)   delta, δE) C) and D)
F) A) and B)

Question 5

Tritium is the common name for

Accepted Answer

A)   hydrogen-0.
B)   hydrogen-1.
C)   hydrogen-2.
D)   hydrogen-3.E) B) and D)
F) A) and C)

Question 6

Which element has the same number of valence electrons as phosphorus?

Accepted Answer

A)   Rb
B)   Bi
C)   In
D)   TeE) A) and B)
F) None of the above

Question 7

Excited state electrons lose energy when they move to the ground state.

Accepted Answer

A) True 
 B)False

Question 8

The nuclear model of the atom was constructed from which fundamental experiment?

Accepted Answer

A)   alpha particle scattering by thin metal foils
B)   cathode ray behavior in electrical fields
C)   atomic spectra from gas discharge tubes
D)   electrolysis of waterE) A) and C)
F) B) and D)

Question 9

The nuclear nature of the atom was postulated by

Accepted Answer

A)   Rutherford.
B)   Dalton.
C)   Thomson.
D)   Millikan.E) None of the above
F) C) and D)

Question 10

Which contains 7 neutrons?

Accepted Answer

A)    C
B)    N
C)    B
D)    SiE) A) and B)
F) A) and C)

Question 11

A metalloid

Accepted Answer

A)   is the same as a metal.
B)   is located on the left side of the periodic table.
C)   has properties intermediate between metals and nonmetals.
D)   is in the center of the periodic table.E) B) and D)
F) None of the above

Question 12

Alkali metals have an ns 2 outer electron structure.

Accepted Answer

A) True 
 B)False

Question 13

Which orbital will have the lowest energy?

Accepted Answer

A)   4d
B)   4f
C)   4p
D)   4sE) None of the above
F) A) and B)

Question 14

Human beings use as much energy in one year as the amount of solar energy that hits the surface of the earth in

Accepted Answer

A)   one hour.
B)   one day.
C)   one week.
D)   one month.E) B) and D)
F) C) and D)

Question 15

Which radioactive particle was used by Geiger and Marsden in their experiments with thin metal foils?

Accepted Answer

A)   alpha, α
B)   beta, β
C)   gamma, γ
D)   lambda, λE) A) and B)
F) A) and C)

Question 16

How many nucleons are there in the sulfur-35 isotope?

Accepted Answer

A)   16
B)   35
C)   19
D)   51E) A) and C)
F) B) and D)

Question 17

Cathode rays are beams of

Accepted Answer

A)   anions.
B)   electrons.
C)   neutrons.
D)   protons.E) A) and C)
F) B) and D)

Question 18

The isotope of hydrogen that has two neutrons is called

Accepted Answer

A)   deuterium.
B)   hydrogen.
C)   dihydrogen.
D)   tritium.E) A) and B)
F) B) and C)

Question 19

Isotopes are atoms of the same element with

Accepted Answer

A)   different numbers of neutrons.
B)   different numbers of electrons.
C)   different numbers of protons.
D)   different atomic numbers.E) C) and D)
F) B) and D)

Question 20

An atom represented by  X has

Accepted Answer

A)   20 protons and 26 neutrons.
B)   20 neutrons and 26 protons.
C)   20 protons and 46 neutrons.
D)   20 neutrons and 46 protons.E) None of the above
F) All of the above

Exam 3: Atomic Structure

How many neutrons are in this isotope of chlorine? Cl

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Which contains 7 neutrons?

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

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Which orbital will have the lowest energy?

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The isotope of hydrogen that has two neutrons is called

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The nuclear model of the atom was constructed from which fundamental experiment?

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Excited state electrons lose energy when they move to the ground state.

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Identify the particle that is the least penetrating.

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Alkali metals have an ns 2 outer electron structure.

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How many nucleons are there in the sulfur-35 isotope?

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Cathode rays are beams of

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Isotopes are atoms of the same element with

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Tritium is the common name for

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Which element has the same number of valence electrons as phosphorus?

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A metalloid

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Human beings use as much energy in one year as the amount of solar energy that hits the surface of the earth in

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The nuclear nature of the atom was postulated by

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An atom represented by X has

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Which radioactive particle was used by Geiger and Marsden in their experiments with thin metal foils?

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Which experimental observation led scientists to speculate that cathode rays contained particles that were constituents of all matter?

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Alkali metals have an ns ²outer electron structure.

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