CHEM 101 MIDTERM LATEST
IVY TECH
What is the molecular geometry if you have 3 single bonds and 1 lone
pair around the central atom?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-D
What is the molecular geometry of SiH4?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-C
END OF
PAGE
1
, CHEM 101 MIDTERM LATEST
IVY TECH
Which of the following statements about the water molecule is TRUE?
A. A water molecule has two dipole moments and they cancel each
other.
B. A water molecule is symmetrical and therefore is non-polar.
C. A water molecule is asymmetric and therefore is polar.
D. The electronegativities of hydrogen and oxygen are equal and
therefore a water molecule is non-polar.
E. None of the above - ANSWERS-C
Consider the following electronegativity values: H=2.1, Cl=3.0, F=4.0
Which molecule below would you expect to have the more polar bond?
A. H2
B. Cl2
C. F2
D. HCl
E. HF - ANSWERS-E
END OF
PAGE
2
, CHEM 101 MIDTERM LATEST
IVY TECH
Which of the following statements are TRUE about the BF3 molecule?
A. BF3 has a trigonal planar molecular geometry
B. BF3 violates the octet rule for the central atom
C. BF3 is nonpolar
D. All of the above statements are true
E. None of the above are true - ANSWERS-D
What is the molecular geometry of PH3?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-D
END OF
PAGE
3
, CHEM 101 MIDTERM LATEST
IVY TECH
The elements with the highest electronegativity values tend to be found
in the:
A. upper right side of the periodic table
B. lower right side of the periodic table
C. upper left side of the periodic table
D. lower left side of the periodic table
E. center of the periodic table - ANSWERS-A
What is the molecular geometry of NH4+?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-C
The total number of electrons to be counted for the Lewis structure of
PO4- polyatomic ion is:
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PAGE
4
IVY TECH
What is the molecular geometry if you have 3 single bonds and 1 lone
pair around the central atom?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-D
What is the molecular geometry of SiH4?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-C
END OF
PAGE
1
, CHEM 101 MIDTERM LATEST
IVY TECH
Which of the following statements about the water molecule is TRUE?
A. A water molecule has two dipole moments and they cancel each
other.
B. A water molecule is symmetrical and therefore is non-polar.
C. A water molecule is asymmetric and therefore is polar.
D. The electronegativities of hydrogen and oxygen are equal and
therefore a water molecule is non-polar.
E. None of the above - ANSWERS-C
Consider the following electronegativity values: H=2.1, Cl=3.0, F=4.0
Which molecule below would you expect to have the more polar bond?
A. H2
B. Cl2
C. F2
D. HCl
E. HF - ANSWERS-E
END OF
PAGE
2
, CHEM 101 MIDTERM LATEST
IVY TECH
Which of the following statements are TRUE about the BF3 molecule?
A. BF3 has a trigonal planar molecular geometry
B. BF3 violates the octet rule for the central atom
C. BF3 is nonpolar
D. All of the above statements are true
E. None of the above are true - ANSWERS-D
What is the molecular geometry of PH3?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-D
END OF
PAGE
3
, CHEM 101 MIDTERM LATEST
IVY TECH
The elements with the highest electronegativity values tend to be found
in the:
A. upper right side of the periodic table
B. lower right side of the periodic table
C. upper left side of the periodic table
D. lower left side of the periodic table
E. center of the periodic table - ANSWERS-A
What is the molecular geometry of NH4+?
A. bent
B. linear
C. tetrahedral
D. trigonal pyramidal
E. not enough info - ANSWERS-C
The total number of electrons to be counted for the Lewis structure of
PO4- polyatomic ion is:
END OF
PAGE
4
