Question 1

What is the symbol of the element in Group 4A(14) and Period 2?

Accepted Answer

A) Be 
B) Mg 
C) Ca 
D) C 
E) Si 
A) Be 
B) Mg 
C) Ca 
D) C 
E) Si

Question 2

The number of neutrons in an atom is equal to

Accepted Answer

A) the atomic number. 
B) the mass number. 
C) the mass number + the atomic number. 
D) the mass number - the atomic number. 
E) the number of protons. 
A) the atomic number. 
B) the mass number. 
C) the mass number + the atomic number. 
D) the mass number - the atomic number. 
E) the number of protons.

Question 3

Valence electrons are electrons located

Accepted Answer

A) in the outermost energy level of an atom. 
B) in the nucleus of an atom. 
C) in the innermost energy level of an atom. 
D) throughout the atom. 
E)  in the first three shells of an atom. 
A) in the outermost energy level of an atom. 
B) in the nucleus of an atom. 
C) in the innermost energy level of an atom. 
D) throughout the atom. 
E)  in the first three shells of an atom.

Question 4

Atomic size decreases going from left to right within a period.

Accepted Answer

A) True 
 B)False

Question 5

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 6

Of the elements: B, C, F, Li, and Na., the element with the largest atomic radius is

Accepted Answer

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

Question 7

The atomic size of atoms

Accepted Answer

A) increases going across a period. 
B) decreases going across a period. 
C) decreases going down within a group. 
D) does not change going across a period. 
E) None of the above. 
A) increases going across a period. 
B) decreases going across a period. 
C) decreases going down within a group. 
D) does not change going across a period. 
E) None of the above.

Question 8

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

Accepted Answer

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

Question 9

sodium

Accepted Answer

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

Question 10

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

Accepted Answer

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

Question 11

aluminum

Accepted Answer

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

Question 12

Of the elements: B, C, F, Li, and Na. The element with the least 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 13

Potassium has one valence electron.

Accepted Answer

A) True 
 B)False

Question 14

What is the symbol of the element in Period 4 and Group 2?

Accepted Answer

A) Be 
B) Mg 
C) Ca 
D) C 
E) Si 
A) Be 
B) Mg 
C) Ca 
D) C 
E) Si

Question 15

Which of the following properties is NOT a characteristic of the Group 1A(1) elements (alkali metals)?

Accepted Answer

A) They are shiny. 
B) They are good conductors of heat. 
C) They react vigorously with water. 
D) Most of them are liquids at room temperature. 
E) They are good conductors of electricity. 
A) They are shiny. 
B) They are good conductors of heat. 
C) They react vigorously with water. 
D) Most of them are liquids at room temperature. 
E) They are good conductors of electricity.

Question 16

Which of the following elements is a noble gas?

Accepted Answer

A) oxygen 
B) chlorine 
C) bromine 
D) argon 
E) nitrogen 
A) oxygen 
B) chlorine 
C) bromine 
D) argon 
E) nitrogen

Question 17

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

Question 18

An electron has a positive charge.

Accepted Answer

A) True 
 B)False

Question 19

A lithium atom is larger than a potassium atom.

Accepted Answer

A) True 
 B)False

Question 20

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.

Exam 4: Atoms

What is the symbol of the element in Group 4A(14) and Period 2?

The number of neutrons in an atom is equal to

Valence electrons are electrons located

Atomic size decreases going from left to right within a period.

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

Of the elements: B, C, F, Li, and Na., the element with the largest atomic radius is

The atomic size of atoms

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

sodium

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

aluminum

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

Potassium has one valence electron.

What is the symbol of the element in Period 4 and Group 2?

Which of the following properties is NOT a characteristic of the Group 1A(1) elements (alkali metals)?

Which of the following elements is a noble gas?

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

An electron has a positive charge.

A lithium atom is larger than a potassium atom.

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

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