Question 1

Ammonia is a planar trigonal molecule.

Accepted Answer

A) True 
 B)False

Question 2

Bulimia is characterized as the failure to maintain a body mass that is at least 85% of normal.

Accepted Answer

A) True 
 B)False

Question 3

When an ionic compound forms between sodium (Na) and bromine (Br) atoms,it is true that

Accepted Answer

A)   a bromine atom donates an electron to a sodium atom.
B)   both the bromine atoms and sodium atoms donate electrons to each other.
C)   a sodium atom donates an electron to a bromine atom.
D)   neither bromine nor sodium atoms donate electrons to each other.

Question 4

Which of the following molecular geometries would most likely give rise to a nonpolar compound?

Accepted Answer

A)  
B)  
C)  
D)

Question 5

Oxygen must gain two electrons to achieve a noble gas configuration.

Accepted Answer

A) True 
 B)False

Question 6

Which type of interparticle forces leads to compounds with the lowest melting points?

Accepted Answer

A)   covalent
B)   dispersion
C)   ionic
D)   dipole-dipole

Question 7

If the electronegativity difference between A and B is 0.8,what type of bond is formed between the two elements?

Accepted Answer

A)   polar covalent
B)   nonpolar covalent
C)   ionic
D)   metallic

Question 8

Which of the following correctly represents the polarity of the bond?

Accepted Answer

A)  
B)  
C)  
D)

Question 9

Which of the following is the correct Lewis structure for C2H4?

Accepted Answer

A)  2H4? 
A)     
B)     
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >
B)  2H4? 
A)     
B)     
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >
C)  2H4? 
A)     
B)     
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >
D)  2H4? 
A)     
B)     
C)     
D)    " class="answers-bank-image d-inline" rel="preload" >

Question 10

Fe2+ and Fe3+ are isoelectronic.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following would you expect to be the most polar molecule?

Accepted Answer

A)   CO2
B)   H2S
C)   KCl
D)   SiH4

Question 12

The formula weight of an ionic compound is analogous to a molecular weight of a covalent compound.

Accepted Answer

A) True 
 B)False

Question 13

What medicinal value does ZnO have?

Accepted Answer

A)   sun screen
B)   relieves diaper rash
C)   relieves poison ivy
D)   all of these

Question 14

A covalent bond is a common type of interparticler force.

Accepted Answer

A) True 
 B)False

Question 15

The correct name for the covalent compound N2O4 is _____ .

Accepted Answer

A)   dinitrogen tetroxide
B)   nitrogen oxide
C)   nitrogen quartoxide
D)   dinitrogen quartoxide

Question 16

The most common positive ion in human fluids is _____ .

Accepted Answer

A)   Cl-
B)   PO- 
B)   PO   
C)   Na+ 
D)   Fe2+" class="answers-bank-image d-inline" rel="preload" >
C)   Na+
D)   Fe2+

Question 17

What would be the proper name for the following binary ionic compound CaBr2?

Accepted Answer

A)   calcium dibromine
B)   monocalcium bromine
C)   monocalcium dibromide
D)   calcium bromide

Question 18

For some representative metals,two possible ions can be formed.Why?

Accepted Answer

A)   s electrons can fill the next lower d orbital.
B)   They can lose electrons to form a cation and gain electrons to form an anion.
C)   They can lose the s electrons or all electrons in their outer shell.
D)   They can lose just the p electrons or all electrons in their outer shell.

Question 19

The name for the compound formed between Co3+ and O2- is cobalt(II)oxide.

Accepted Answer

A) True 
 B)False

Question 20

Some elements can display more than one charge.The most stable charge is

Accepted Answer

A)   due to having 6 electrons in the outside orbit.
B)   that charge produced by a loss of electrons,not a gain of electrons.
C)   the charge produced by the noble gas configuration.
D)   All are correct.

Exam 4: Forces Between Particles

Fe2+ and Fe3+ are isoelectronic.

Correct AnswerverifiedShow Answer

Which type of interparticle forces leads to compounds with the lowest melting points?

Correct AnswerverifiedShow Answer

For some representative metals,two possible ions can be formed.Why?

Correct AnswerverifiedShow Answer

Oxygen must gain two electrons to achieve a noble gas configuration.

Correct AnswerverifiedShow Answer

When an ionic compound forms between sodium (Na) and bromine (Br) atoms,it is true that

Correct AnswerverifiedShow Answer

What would be the proper name for the following binary ionic compound CaBr2?

Correct AnswerverifiedShow Answer

Which of the following is the correct Lewis structure for C2H4?

Correct AnswerverifiedShow Answer

The formula weight of an ionic compound is analogous to a molecular weight of a covalent compound.

Correct AnswerverifiedShow Answer

Which of the following molecular geometries would most likely give rise to a nonpolar compound?

Correct AnswerverifiedShow Answer

Some elements can display more than one charge.The most stable charge is

Correct AnswerverifiedShow Answer

The name for the compound formed between Co3+ and O2- is cobalt(II)oxide.

Correct AnswerverifiedShow Answer

If the electronegativity difference between A and B is 0.8,what type of bond is formed between the two elements?

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Which of the following would you expect to be the most polar molecule?

Correct AnswerverifiedShow Answer

Bulimia is characterized as the failure to maintain a body mass that is at least 85% of normal.

Correct AnswerverifiedShow Answer

What medicinal value does ZnO have?

Correct AnswerverifiedShow Answer

A covalent bond is a common type of interparticler force.

Correct AnswerverifiedShow Answer

The most common positive ion in human fluids is _____ .

Correct AnswerverifiedShow Answer

The correct name for the covalent compound N2O4 is _____ .

Correct AnswerverifiedShow Answer

Which of the following correctly represents the polarity of the bond?

Correct AnswerverifiedShow Answer

Ammonia is a planar trigonal molecule.

Correct AnswerverifiedShow Answer

Fe²⁺ and Fe³⁺ are isoelectronic.

Correct Answer
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What would be the proper name for the following binary ionic compound CaBr₂?

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Which of the following is the correct Lewis structure for C₂H₄?

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The name for the compound formed between Co³⁺ and O^2- is cobalt(II)oxide.

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The correct name for the covalent compound N₂O₄ is _____ .

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