Question 1

The Group 8A (18)elements

Accepted Answer

A) melt at high temperatures. 
B) are unreactive and are rarely found in combination with other elements. 
C) are good conductors of electricity. 
D) are liquids at room temperature. 
E) react vigorously with water. 
A) melt at high temperatures. 
B) are unreactive and are rarely found in combination with other elements. 
C) are good conductors of electricity. 
D) are liquids at room temperature. 
E) react vigorously with water.

Question 2

Of the elements: B, C, F, Li, and Na, the element with the smallest ionization energy is

Accepted Answer

A) B. 
B) C. 
C) F. 
D) Li. 
E) Na. 
A) B. 
B) C. 
C) F. 
D) Li. 
E) Na.

Question 3

What element has the electron configuration

Accepted Answer

A) carbon 
B) silicon 
C) sulfur 
D) oxygen 
E) iron 
A) carbon 
B) silicon 
C) sulfur 
D) oxygen 
E) iron

Question 4

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

Accepted Answer

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

Question 5

What is the electron configuration for potassium (atomic number 19)?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

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

Accepted Answer

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

Question 7

Of the elements: B, C, F, Li, and Na, the element with the highest ionization energy is

Accepted Answer

A) B. 
B) C. 
C) F. 
D) Li. 
E) Na. 
A) B. 
B) C. 
C) F. 
D) Li. 
E) Na.

Question 8

Of the elements: B, C, F, Li, and Na, the element with the most metallic character is

Accepted Answer

A) B. 
B) C. 
C) F. 
D) Li. 
E) Na. 
A) B. 
B) C. 
C) F. 
D) Li. 
E) Na.

Question 9

Select the correct symbol for the element.
-aluminum

Accepted Answer

A) Au 
B) Ag 
C) Am 
D) Al 
E) Sn 
A) Au 
B) Ag 
C) Am 
D) Al 
E) Sn

Question 10

Which of the following descriptions of a subatomic particle is correct?

Accepted Answer

A) A proton has a positive charge and a mass of approximately 1 amu. 
B) A proton has a positive charge and a negligible mass. 
C) An electron has a negative charge and a mass of approximately 1 amu. 
D) A neutron has a positive charge and a mass of approximately 1 amu. 
E) A neutron has no charge and its mass is negligible. 
A) A proton has a positive charge and a mass of approximately 1 amu. 
B) A proton has a positive charge and a negligible mass. 
C) An electron has a negative charge and a mass of approximately 1 amu. 
D) A neutron has a positive charge and a mass of approximately 1 amu. 
E) A neutron has no charge and its mass is negligible.

Question 11

Au is the symbol for

Accepted Answer

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

Question 12

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

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 13

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 all have 7 protons. 
C)  They all have 7 electrons. 
D)  They are isotopes. 
E)  They all have the same atomic number. 
A)  They all have the same mass number. 
B)  They all have 7 protons. 
C)  They all have 7 electrons. 
D)  They are isotopes. 
E)  They all have the same atomic number.

Question 14

Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element is

Accepted Answer

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

Question 15

Which of the following elements is a metal?

Accepted Answer

A) argon 
B) fluorine 
C) strontium 
D) phosphorus 
E) nitrogen 
A) argon 
B) fluorine 
C) strontium 
D) phosphorus 
E) nitrogen

Question 16

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

Accepted Answer

A) neutrons. 
B) electrons plus protons. 
C) neutrons plus protons. 
D) protons. 
E) nuclei. 
A) neutrons. 
B) electrons plus protons. 
C) neutrons plus protons. 
D) protons. 
E) nuclei.

Question 17

The elements sodium, magnesium, and silicon

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

Select the correct symbol for the element.
-sodium

Accepted Answer

A) Sm 
B) So 
C) Na 
D) No 
E) Au 
A) Sm 
B) So 
C) Na 
D) No 
E) Au

Question 20

The number of dots in the electron dot structure of carbon is

Accepted Answer

A) one. 
B) two. 
C) three. 
D) four. 
E) five. 
A) one. 
B) two. 
C) three. 
D) four. 
E) five.

Exam 4: Atoms and Elements

The Group 8A (18)elements

Of the elements: B, C, F, Li, and Na, the element with the smallest ionization energy is

What element has the electron configuration

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

What is the electron configuration for potassium (atomic number 19)?

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

Of the elements: B, C, F, Li, and Na, the element with the highest ionization energy is

Of the elements: B, C, F, Li, and Na, the element with the most metallic character is

Select the correct symbol for the element. -aluminum

Which of the following descriptions of a subatomic particle is correct?

Au is the symbol for

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

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

Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element is

Which of the following elements is a metal?

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

The elements sodium, magnesium, and silicon

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

Select the correct symbol for the element. -sodium

The number of dots in the electron dot structure of carbon is

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