• Some questions and their answers appear
over multiple slides. The next two slides
cover the Lewis Dot structure of
tetrafluoroethylene. The 1st slide asks and
answers two questions based on the
molecular formula. The slide following that
provides the structure.
• Draw the complete LDS for this
compound.
F2CCF2
• How many bonds are in the structure?
6
• How many sets of lone pair electrons are
in the structure?
12
F
F
C
F
C
F
• Some questions and their answers appear
over multiple slides. The next two slides
cover the Lewis Dot structure of C2H4O3.
The 1st slide asks and answers two
questions based on the molecular formula.
The slide following that provides the
structure and some incorrect structures.
• Draw the complete LDS for this
compound.
O
H3COCOH
• How many bonds are in the structure?
9
• How many sets of lone pair electrons are
in the structure?
6
H
H
C
H
O
O
C
O
H
• The next two slides covers the assignment
of formal charges. The 1st slide asks for
the formal charges on a resonance form of
sulfuric acid. The slide following that
shows the resonance form with the formal
charges in their proper locations.
a
O
H
O
S
b
O
O
H
b
a
• What is the formal charge on the Oa
atoms?
• What is the formal charge on the Ob
atoms?
• What is the formal charge on the S atom?
• Enter the answer to all 3 sequentially.
-10+2
a
O
+2
H
O
S
b
O
a
O
b
H
• The next two slides cover the Lewis Dot
structure of acetonitrile. The 1st slide asks
and answers two questions based on the
molecular formula. The slide following that
asks for the correct structure and that of
the next most reasonable structural isomer
Draw the LDS for CH3CN
• How many bonds are in the structure?
• How many sets of lone pair electrons are
in the structure?
Which structure fits this
formula best?
a.
H
H
H
C
C
b. H
N
H
H
C
C
c.
N
H
H
e.
C
H
N
C
N
C
H
H
H
d.
H
C
C
N
C
H
H
• Excluding b, which is the best LDS for 2 C’s,
3 H’s and 1 N?
CH2CHCO2CH3 For this formula choose the
complete Lewis Dot Structure that is most stable
and fits best.
Line Structure for the DNA Base Thymine
• In the complete LDS, how many pairs of lone
pair electrons are present?
Line Structure for the DNA Base Thymine
• In the complete LDS, how many C atoms are
present?
Line Structure for the DNA Base Thymine
• In the complete LDS, how many H atoms are
present?