Question 1

Which of the following elements is a noble gas?

Accepted Answer

A)  oxygen
B)  chlorine
C)  bromine
D)  argon
E)  nitrogenF) A) and C)
G) A) and E)

Question 2

Consider an isotope of sodium with a mass number of 25.The number of neutrons in this isotope of sodium is ________.

Accepted Answer

A)  11
B)  14
C)  16
D)  25
E)  32F) B) and C)
G) None of the above

Question 3

Identify the metalloid in the following list.

Accepted Answer

A)  sulfur
B)  fluorine
C)  silver
D)  copper
E)  germaniumF) None of the above
G) D) and E)

Question 4

The elements lithium,sodium,and potassium ________.

Accepted Answer

A)  are isotopes of each other
B)  are in the same period of elements
C)  have the same number of neutrons
D)  are in the same group
E)  have the same mass numberF) A) and C)
G) B) and D)

Question 5

Write the electron arrangement for the atom shown.
-The symbol for sodium is ________.

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 6

Select the correct symbol for the element iron.

Accepted Answer

A)  Ir
B)  Fs
C)  Fe
D)  In
E)  FEF) B) and C)
G) None of the above

Question 7

The element in this list with chemical properties similar to magnesium is ________.

Accepted Answer

A)  sodium
B)  boron
C)  carbon
D)  strontium
E)  chlorineF) None of the above
G) B) and C)

Question 8

Isotopes are atoms of the same element that have ________.

Accepted Answer

A)  different atomic numbers
B)  the same atomic numbers but different numbers of protons
C)  the same atomic numbers but different numbers of electrons
D)  the same atomic number but different numbers of neutrons
E)  the same atomic mass but different numbers of protonsF) C) and E)
G) B) and C)

Question 9

Select the correct symbol for the element silver.

Accepted Answer

A)  S
B)  Si
C)  Ag
D)  Au
E)  AGF) C) and D)
G) A) and D)

Question 10

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

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) A) and D)
G) B) and D)

Question 11

What is the correct electron arrangement for the lithium atom?

Accepted Answer

A)  3
B)  3,1
C)  1,2
D)  2,1
E)  2,5F) A) and B)
G) A) and C)

Question 12

The symbol for potassium is P.

Accepted Answer

A) True 
 B)False

Question 13

The ionization energy of atoms ________.

Accepted Answer

A)  decreases going across a period
B)  decreases going down within a group
C)  increases going down within a group
D)  does not change going down within a group
E)  none of the aboveF) A) and B)
G) A) and C)

Question 14

Ionization energy is ________.

Accepted Answer

A)  the energy an ion acquires from an electron
B)  the energy needed to remove the least tightly bound electron
C)  highest for metals in Group 1A (1) 
D)  higher for potassium than for lithium
E)  none of the aboveF) All of the above
G) A) and B)

Question 15

The correct symbol for the isotope of potassium with 22 neutrons is ________.

Accepted Answer

A)    K
B)    K
C)    P
D)    P
E)    KF) A) and B)
G) None of the above

Question 16

Write the electron arrangement for the atom shown.
-The symbol for copper is ________.

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 17

A sample of chlorine has two naturally occurring isotopes.The isotope Cl-35 makes up 75.8% of the sample,and the isotope Cl-37 makes up 24.3% of the sample.Which of the following statements is true?

Accepted Answer

A)  The atomic mass of chlorine will be less than 35.
B)  The atomic mass of chlorine will be more than 37.
C)  You cannot tell what the atomic mass will be.
D)  The atomic mass will be between 35 and 37.
E)  The atomic mass will be 24.3.F) A) and D)
G) B) and D)

Question 18

Sulfur is a nonmetal.

Accepted Answer

A) True 
 B)False

Question 19

The atomic number is equal to the number of protons.

Accepted Answer

A) True 
 B)False

Question 20

Write the electron arrangement for the atom shown.
-Argon

Accepted Answer

The answer of Write the electron arrangement for the atom...

Exam 4: Atoms and Elements

Sulfur is a nonmetal.

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Ionization energy is ________.

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The element in this list with chemical properties similar to magnesium is ________.

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The atomic number is equal to the number of protons.

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The ionization energy of atoms ________.

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Write the electron arrangement for the atom shown. -The symbol for sodium is ________.

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What is the correct electron arrangement for the lithium atom?

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The symbol for potassium is P.

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Select the correct symbol for the element iron.

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Which of the following elements is a noble gas?

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Write the electron arrangement for the atom shown. -The symbol for copper is ________.

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Write the electron arrangement for the atom shown. -Argon

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

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Identify the metalloid in the following list.

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Select the correct symbol for the element silver.

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The elements lithium,sodium,and potassium ________.

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The correct symbol for the isotope of potassium with 22 neutrons is ________.

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A sample of chlorine has two naturally occurring isotopes.The isotope Cl-35 makes up 75.8% of the sample,and the isotope Cl-37 makes up 24.3% of the sample.Which of the following statements is true?

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Consider an isotope of sodium with a mass number of 25.The number of neutrons in this isotope of sodium is ________.

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Isotopes are atoms of the same element that have ________.

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