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Study Quiz 1
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1
What is the total number of valence electrons in a CINO molecule?
A)17
B)18
C)16
D)15
2
What is the total number of shared electrons for a CH4 molecule?
A)2
B)4
C)8
D)16
3
A co-ordinate covalent bond involves the sharing of a pair of electrons between two atoms. Which of the following is correct about this type of bond?
A)Each atom contributes one electron to the shared pair.
B)Only one atom contributes both electrons to the shared pair.
C)There is always more than one possible Lewis structure.
D)One atom donates an electron to the other atom.
4
Which of the following is a linear molecule?
A)CH2O
B)NH3
C)H2O
D)HCN
5
Which of the following molecules does not have a tetrahedral shape?
A)CH2F2
B)NH4+
C)SO4+
D)H3O+
6
Resonance structures are necessary because
A)molecular bonds may have properties between a single and a double bond
B)molecules may contain more than one type of bond
C)the only possible types of covalent bonds are single, double, and triple
D)molecular bonds may have properties similar to ionic bonds
7
Which of the following has a bent shape?
A)NO2-
B)HCN
C)NO2+
D)XeI2
8
Which of the following is not trigonal planar in shape?
A)SO3
B)CH2O
C)GaI3
D)CH3F
9
Using the VSEPR theory, what is the molecular shape of CCl4?
A)Trigonal planar
B)Trigonal bipyramidal
C)Tetrahedral
D)Trigonal pyramidal
10
Which of the following molecules is polar?
A)HCN
B)CCl4
C)CO2
D)SO3





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