Question 1

Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ)  the standard enthalpy change H° for the hydrogenation of ethyne (acetylene)  to ethane. H° for the hydrogenation of ethyne (acetylene)  to ethane.   A)  -296 kJ B)  -51 kJ C)  51 kJ D)  296 kJ E)  381 kJ" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   -296 kJ
B)   -51 kJ
C)   51 kJ
D)   296 kJ
E)   381 kJF) B) and D)
G) C) and E)

Question 2

Which of the following period 3 chlorides would be expected to have the highest melting point?

Accepted Answer

A)   MgCl2
B)   AlCl3
C)   SiCl4
D)   PCl3
E)   SCl2F) B) and C)
G) A) and D)

Question 3

The melting points of metals are only moderately high because

Accepted Answer

A)   metallic bonding is weak.
B)   metals have fewer bonding electrons than non-metals.
C)   metals also have relatively low boiling points.
D)   the melting process does not break the metallic bonds.
E)   metals prefer to be bonded to non-metals.F) B) and C)
G) A) and B)

Question 4

Ionic bonding typically occurs when a ______________ bonds with a ______________.

Accepted Answer

The answer of Ionic bonding typically occurs when a ______________...

Question 5

When an atom is represented in a Lewis electron dot symbol, the element symbol represents ______________ and the dots represent ______________.

Accepted Answer

nucleus an...

Question 6

Which of the following elements is the most electronegative?

Accepted Answer

A)   Ne
B)   Rb
C)   P
D)   I
E)   ClF) B) and C)
G) C) and D)

Question 7

Which of the following contains ionic bonding?

Accepted Answer

A)   CO
B)   SrF2
C)   Al
D)   OCl2
E)   HClF) A) and B)
G) A) and C)

Question 8

Select the most polar bond amongst the following.

Accepted Answer

A)   C-O
B)   Si-F
C)   Cl-F
D)   C-F
E)   C-IF) C) and D)
G) A) and E)

Question 9

Which of the following elements is the least electronegative?

Accepted Answer

A)   Si
B)   Se
C)   S
D)   Sc
E)   SrF) C) and D)
G) B) and D)

Question 10

Which of the following is a covalent compound?

Accepted Answer

A)   Na2O
B)   CaCl2
C)   Cl2O
D)   CsCl
E)   Al2O3F) A) and E)
G) C) and E)

Question 11

Covalent bonding typically occurs when a ______________ bonds with a ______________.

Accepted Answer

non-metal;...

Question 12

The lattice energy for ionic crystals increases as the charge on the ions _____________ and the size of the ions __________________.

Accepted Answer

A)   increases, increases
B)   increases, decreases
C)   decreases, increases
D)   decreases, decreases
E)   None of the above is generally correct.F) A) and D)
G) A) and B)

Question 13

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of varying bond order.

Accepted Answer

Carbon and oxygen form single, double, a...

Question 14

The electrostatic energy of two charged particles is inversely proportional to the distance between them.

Accepted Answer

A) True 
 B)False

Exam 9: Models of Chemical Bonding

Which of the following elements is the least electronegative?

Correct Answer
verified

Covalent bonding typically occurs when a bonds with a .

Correct Answer
verified
non-metal;...
View Answer

Which of the following period 3 chlorides would be expected to have the highest melting point?

Correct Answer
verified

The melting points of metals are only moderately high because

Correct Answer
verified

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of varying bond order.

Correct Answer
verified
Carbon and oxygen form single, double, a...
View Answer

When an atom is represented in a Lewis electron dot symbol, the element symbol represents and the dots represent .

Correct Answer
verified
nucleus an...
View Answer

The lattice energy for ionic crystals increases as the charge on the ions _ and the size of the ions ______.

Correct Answer
verified

Select the most polar bond amongst the following.

Correct Answer
verified

Which of the following contains ionic bonding?

Correct Answer
verified

Ionic bonding typically occurs when a bonds with a .

Correct Answer
verified

The electrostatic energy of two charged particles is inversely proportional to the distance between them.

Correct Answer
verified

Which of the following elements is the most electronegative?

Correct Answer
verified

Which of the following is a covalent compound?

Correct Answer
verified

Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ) the standard enthalpy change H° for the hydrogenation of ethyne (acetylene) to ethane.

Correct Answer
verified

Exam 9: Models of Chemical Bonding

Which of the following elements is the least electronegative?

Correct AnswerverifiedShow Answer

Covalent bonding typically occurs when a ______________ bonds with a ______________.

Correct Answerverifiednon-metal;...View AnswerShow Answer

Which of the following period 3 chlorides would be expected to have the highest melting point?

Correct AnswerverifiedShow Answer

The melting points of metals are only moderately high because

Correct AnswerverifiedShow Answer

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of varying bond order.

Correct AnswerverifiedCarbon and oxygen form single, double, a...View AnswerShow Answer

When an atom is represented in a Lewis electron dot symbol, the element symbol represents ______________ and the dots represent ______________.

Correct Answerverifiednucleus an...View AnswerShow Answer

The lattice energy for ionic crystals increases as the charge on the ions _____________ and the size of the ions __________________.

Correct AnswerverifiedShow Answer

Select the most polar bond amongst the following.

Correct AnswerverifiedShow Answer

Which of the following contains ionic bonding?

Correct AnswerverifiedShow Answer

Ionic bonding typically occurs when a ______________ bonds with a ______________.

Correct AnswerverifiedShow Answer

The electrostatic energy of two charged particles is inversely proportional to the distance between them.

Correct AnswerverifiedShow Answer

Which of the following elements is the most electronegative?

Correct AnswerverifiedShow Answer

Which of the following is a covalent compound?

Correct AnswerverifiedShow Answer

Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ) the standard enthalpy change H° for the hydrogenation of ethyne (acetylene) to ethane.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Covalent bonding typically occurs when a bonds with a .

Correct Answer
verified
non-metal;...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Carbon and oxygen form single, double, a...
View Answer

When an atom is represented in a Lewis electron dot symbol, the element symbol represents and the dots represent .

Correct Answer
verified
nucleus an...
View Answer

The lattice energy for ionic crystals increases as the charge on the ions _ and the size of the ions ______.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Ionic bonding typically occurs when a bonds with a .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified