quiz7-1
Chapter
West Virginia University
Dr. Robert Belford




Question 1
Which element has a positive electron affinity?
(A)  Chlorine
(B)  hydrogen
(C)  neon
(D)  oxygen
 
Hint

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Question 2
Why does group IIA have a more positive (endothermic) electron affinity than either 1A or IIIA?
(A)  removes electron from ns2 configuration
(B)  completes a 2s orbital
(C)  adds electron to np orbital which is shielded by ns2 electron configuration
(D)  it has a more negative potential
 

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Question 3
Which element is the most electronegative?
(A)  C
(B)  N
(C)  O
(D)  F
 

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Question 4
Which element is the most electronegative?
(A)  Li
(B)  Na
(C)  K
(D)  Rb
 

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Question 5
Which bond has the largest dipole moment?
(A)  C-H
(B)  N-H
(C)  O-H
(D)  F-H
 

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Question 6
Consider the bond between Sodium (electronegativity = 0.9) and Hydrogen (elctrognegativity = 2.1). Which atom is at the positive end of the molecule?
(A)  Na
(B)  H
(C)  both, it is nonpolar
(D)  It is exactly in the middle
 

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Question 7
List the elements of the second row of the periodic table with endothermic electron affinities.
(A)  B,C,O
(B)  Li,O,F
(C)  Be,N,Ne
(D)  Be,B,C
 

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Question 8
Which element if the periodic table has the highest electron affinity?
(A)  H
(B)  F
(C)  He
(D)  Fr
 

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Question 9
Which element in the periodic table has the lowest electron affinity?
(A)  H
(B)  He
(C)  Fr
(D)  Rn
 

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Question 10
What group of the periodic table does not have values of electronegativity
(A)  alkali metals
(B)  alkaline earth metals
(C)  halogens
(D)  noble gasses
 
Hint

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