Question 1

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

Accepted Answer

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

Question 2

The mass number of an atom can be calculated from

Accepted Answer

A) the number of neutrons. 
B) the number of electrons. 
C) the number of electrons plus protons. 
D) the number of protons plus neutrons. 
E) the number of protons. 
A) the number of neutrons. 
B) the number of electrons. 
C) the number of electrons plus protons. 
D) the number of protons plus neutrons. 
E) the number of protons.

Question 3

Identify the metalloid in the following list.

Accepted Answer

A) sulfur 
B) copper 
C) silver 
D) fluorine 
E) germanium 
A) sulfur 
B) copper 
C) silver 
D) fluorine 
E) germanium

Question 4

The elements lithium, sodium, and potassium

Accepted Answer

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

Question 5

Semiconductors are located in the periodic table on (or in)the

Accepted Answer

A) line dividing metals from nonmetals in the table. 
B) left side of the table. 
C) first period of the table. 
D) last period of the table. 
E) right side of the table. 
A) line dividing metals from nonmetals in the table. 
B) left side of the table. 
C) first period of the table. 
D) last period of the table. 
E) right side of the table.

Question 6

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 7

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

Accepted Answer

A) sodium. 
B) chlorine. 
C) boron. 
D) strontium. 
E) carbon. 
A) sodium. 
B) chlorine. 
C) boron. 
D) strontium. 
E) carbon.

Question 8

How many valence electrons are in the electron-dot structures for the elements in group 3A(13)?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 6 
A) 1 
B) 2 
C) 3 
D) 4 
E) 6

Question 9

Chlorine has two naturally occurring isotopes. The isotope Cl-35 (mass = 35.0 amu)makes up 75.8% of the sample, and the isotope Cl-37 (mass = 37.0 amu)makes up 24.2% of the sample. What is the average atomic
Mass for chlorine?

Accepted Answer

A) 36.6 amu 
B) 35 amu 
C) 36.0 amu 
D) 35.521 amu 
E) 35.5 amu 
A) 36.6 amu 
B) 35 amu 
C) 36.0 amu 
D) 35.521 amu 
E) 35.5 amu

Question 10

Identify the noble gas in the following list.

Accepted Answer

A) gold 
B) chlorine 
C) helium 
D) oxygen 
E) nitrogen 
A) gold 
B) chlorine 
C) helium 
D) oxygen 
E) nitrogen

Question 11

Select the correct symbol for the element.
-potassium

Accepted Answer

A) Po 
B) Pt 
C) P 
D) K 
E) Ko 
A) Po 
B) Pt 
C) P 
D) K 
E) Ko

Question 12

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

Accepted Answer

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

Question 13

Which of the following is the correct electron-dot structure for carbon?

Accepted Answer

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

Question 14

The atomic mass of an element is equal to

Accepted Answer

A) its mass number. 
B) the average mass of all of the naturally occurring isotopes of the element. 
C) its atomic number. 
D) one-twelfth of the mass of a carbon-12 atom. 
E) a weighted average mass of all of the naturally occurring isotopes of the element. 
A) its mass number. 
B) the average mass of all of the naturally occurring isotopes of the element. 
C) its atomic number. 
D) one-twelfth of the mass of a carbon-12 atom. 
E) a weighted average mass of all of the naturally occurring isotopes of the element.

Question 15

Select the correct symbol for the element.
-mercury

Accepted Answer

A) Au 
B) Hg 
C) Ag 
D) Mc 
E) Pb 
A) Au 
B) Hg 
C) Ag 
D) Mc 
E) Pb

Question 16

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

Accepted Answer

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

Question 17

What is the element with the electron configuration

Accepted Answer

A) Cl 
B) S 
C) F 
D) Ar 
E) Be 
A) Cl 
B) S 
C) F 
D) Ar 
E) Be

Question 18

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

Accepted Answer

A) 32. 
B) 11. 
C) 16. 
D) 25. 
E) 14. 
A) 32. 
B) 11. 
C) 16. 
D) 25. 
E) 14.

Question 19

Of the elements: Li, Na, K, Rb, and Cs, the element with the most metallic character is

Accepted Answer

A) Li. 
B) Na. 
C) K. 
D) Rb. 
E) Cs. 
A) Li. 
B) Na. 
C) K. 
D) Rb. 
E) Cs.

Question 20

The smallest particle of an element that retains the characteristics of the element is a(n)

Accepted Answer

A) neutron. 
B) atom. 
C) nucleus. 
D) electron. 
E) proton. 
A) neutron. 
B) atom. 
C) nucleus. 
D) electron. 
E) proton.

Exam 4: Atoms and Elements

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

The mass number of an atom can be calculated from

Identify the metalloid in the following list.

The elements lithium, sodium, and potassium

Semiconductors are located in the periodic table on (or in)the

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

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

How many valence electrons are in the electron-dot structures for the elements in group 3A(13)?

Chlorine has two naturally occurring isotopes. The isotope Cl-35 (mass = 35.0 amu)makes up 75.8% of the sample, and the isotope Cl-37 (mass = 37.0 amu)makes up 24.2% of the sample. What is the average atomic Mass for chlorine?

Identify the noble gas in the following list.

Select the correct symbol for the element. -potassium

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

Which of the following is the correct electron-dot structure for carbon?

The atomic mass of an element is equal to

Select the correct symbol for the element. -mercury

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

What is the element with the electron configuration

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

Of the elements: Li, Na, K, Rb, and Cs, the element with the most metallic character is

The smallest particle of an element that retains the characteristics of the element is a(n)

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