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 E)
G) A) and D)

Question 2

The atomic number is equal to the number of protons.

Accepted Answer

A) True 
 B)False

Question 3

Select the correct symbol for the element iron.

Accepted Answer

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

Question 4

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

Accepted Answer

A)  sodium
B)  boron
C)  carbon
D)  strontium
E)  chlorineF) C) and D)
G) B) and D)

Question 5

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

Question 6

Write the electron arrangement for the atom shown.
-Argon

Accepted Answer

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

Question 7

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) D) and E)
G) B) and C)

Question 8

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 9

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) B) and D)
G) D) and E)

Question 10

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) A) and C)
G) C) and D)

Question 11

Sulfur is a nonmetal.

Accepted Answer

A) True 
 B)False

Question 12

Identify the metalloid in the following list.

Accepted Answer

A)  sulfur
B)  fluorine
C)  silver
D)  copper
E)  germaniumF) C) and D)
G) B) and C)

Question 13

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 E)
G) C) and D)

Question 14

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) All of the above
G) C) and D)

Question 15

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 B)
G) D) and E)

Question 16

Select the correct symbol for the element silver.

Accepted Answer

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

Question 17

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 18

The symbol for potassium is P.

Accepted Answer

A) True 
 B)False

Question 19

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 D)
G) A) and E)

Question 20

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 D)
G) C) and D)

Exam 4: Atoms and Elements

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

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Identify the metalloid in the following list.

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Write the electron arrangement for the atom shown. -Argon

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Ionization energy is ________.

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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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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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Select the correct symbol for the element iron.

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

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Select the correct symbol for the element silver.

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

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The elements lithium,sodium,and potassium ________.

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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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Which of the following elements is a noble gas?

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The atomic number is equal to the number of protons.

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The symbol for potassium is P.

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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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Isotopes are atoms of the same element that have ________.

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The ionization energy of atoms ________.

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Sulfur is a nonmetal.

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