Question 1

What is the element with the electron configuration 1s22s22p63s23p5?

Accepted Answer

A)  Be
B)  Cl
C)  F
D)  S
E)  ArF) D) and E)
G) A) and D)

Question 2

Chlorine has a higher ionization energy than fluorine.

Accepted Answer

A) True 
 B)False

Question 3

Au is the symbol for

Accepted Answer

A)  gold.
B)  silver.
C)  argon.
D)  aluminum.
E)  sodium.F) B) and C)
G) A) and E)

Question 4

iron

Accepted Answer

A)  Ir
B)  Fs
C)  Fe
D)  In
E)  FEF) A) and B)
G) A) and C)

Question 5

What is the mass number of an atom of potassium that has 20 neutrons?

Accepted Answer

A)  15
B)  19
C)  35
D)  39
E)  59F) A) and B)
G) C) and E)

Question 6

Chlorine has a higher ionization energy than aluminum.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is NOT true for the atoms 13N, 14N, and 15N?

Accepted Answer

A)  They all have the same mass number.
B)  They are isotopes.
C)  They all have the same atomic number.
D)  They all have 7 protons.
E)  They all have 7 electrons.F) All of the above
G) C) and E)

Question 8

In an electron-dot structure of an element, the dots are used to represent

Accepted Answer

A)  all of the electrons in the atom.
B)  the valence electrons.
C)  the electron arrangement.
D)  only the electrons that will participate in bond formation.
E)  the electrons that the element will gain when it forms a compound.F) C) and D)
G) D) and E)

Question 9

Ca is the symbol for

Accepted Answer

A)  calcium.
B)  carbon.
C)  cobalt.
D)  copper.
E)  cadmium.F) B) and D)
G) B) and C)

Question 10

Consider a neutral atom with 30 protons and 34 neutrons. The number of electrons in this atom is

Accepted Answer

A)  30.
B)  32.
C)  34.
D)  64.
E)  94.F) C) and E)
G) A) and C)

Question 11

In an atom, the nucleus contains

Accepted Answer

A)  an equal number of protons and electrons.
B)  all the protons and neutrons.
C)  all the protons and electrons.
D)  only neutrons.
E)  only protons.F) B) and E)
G) A) and E)

Question 12

Isotopes have the same atomic number but different mass numbers.

Accepted Answer

A) True 
 B)False

Question 13

The atomic number of an atom is equal to the number of

Accepted Answer

A)  nuclei.
B)  neutrons.
C)  neutrons plus protons.
D)  electrons plus protons.
E)  protons.F) A) and B)
G) All of the above

Question 14

Which of the following elements is a nonmetal?

Accepted Answer

A)  nitrogen
B)  sodium
C)  iron
D)  silver
E)  calciumF) C) and D)
G) C) and E)

Question 15

The maximum number of electrons that may occupy the third energy level is

Accepted Answer

A)  2.
B)  8.
C)  10.
D)  18.
E)  32.F) C) and D)
G) A) and D)

Question 16

Write in the electronic configuration for the atom shown.
-Chlorine

Accepted Answer

The answer of Write in the electronic configuration for the...

Question 17

Given the following:  Which are isotopes of each other?

Accepted Answer

A)   are isotopes of each other.
B)  are isotopes of each other.
C)   are isotopes of each other.
D)  None are isotopes of each other.E) B) and C)
F) A) and B)

Question 18

Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of

Accepted Answer

A)  118 protons, 50 neutrons, 118 electrons
B)  118 protons, 118 neutrons, 50 electrons
C)  50 protons, 68 neutrons, 50 electrons
D)  68 protons, 68 neutrons, 50 electrons
E)  50 protons, 50 neutrons, 50 electronsF) C) and E)
G) B) and D)

Question 19

The primary substances of which all other things are composed are

Accepted Answer

A)  molecules.
B)  compounds.
C)  elements.
D)  electrons.
E)  protons.F) B) and D)
G) B) and E)

Question 20

Which of the following is a characteristic of the modern periodic table?

Accepted Answer

A)  A group is a horizontal row on the periodic table.
B)  A period is a column on the periodic table.
C)  The elements in each group have similar chemical properties.
D)  The B groups contain the representative elements.
E)  The A groups contain the transition elements.F) C) and D)
G) B) and E)

Exam 4: Atoms

Write in the electronic configuration for the atom shown. -Chlorine

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Ca is the symbol for

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The primary substances of which all other things are composed are

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The atomic number of an atom is equal to the number of

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Isotopes have the same atomic number but different mass numbers.

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What is the mass number of an atom of potassium that has 20 neutrons?

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Which of the following is NOT true for the atoms 13N, 14N, and 15N?

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iron

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What is the element with the electron configuration 1s22s22p63s23p5?

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In an atom, the nucleus contains

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The maximum number of electrons that may occupy the third energy level is

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Which of the following elements is a nonmetal?

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Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of

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Which of the following is a characteristic of the modern periodic table?

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Chlorine has a higher ionization energy than fluorine.

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In an electron-dot structure of an element, the dots are used to represent

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Chlorine has a higher ionization energy than aluminum.

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Consider a neutral atom with 30 protons and 34 neutrons. The number of electrons in this atom is

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Given the following: Which are isotopes of each other?

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Au is the symbol for

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Which of the following is NOT true for the atoms ¹³N, ¹⁴N, and ¹⁵N?

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What is the element with the electron configuration 1s²2s²2p⁶3s²3p⁵?

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