Name__________________________________
Procedure: In this experiment you will draw Lewis structures for a series of molecules and determine the electronic (VSEPR) geometry,
hybridization, molecular geometry and ideal bond angle(s) for the central atom or other specified atom. You will use molecular modeling
kits and take pictures of each structure to help visualize the actual geometry. The octet rule must apply for C, N, O and F! For all others, it
is a good guideline, but may be violated.
Molecular
Formula
1.NH
3
-
5+3(1)= 8e
(# valence e-)
Lewis Structure
..
H—N—H
|
H
ED and
Molecular
Geometry
Polarity
IMF(s)
Tetrahedral/
Trigonal
pyramidal
Hybrid- Ideal Bond
Angles
ization
3
sp
Picture of Ball and Stick Molecule
109.5°
2.
C2H2
3.
CH2Cl2
Molecular
Formula
Lewis Structure
ED and
Molecular
Geometry
Hybrid- Polarity
ization
IMF(s)
Ideal Bond
Angles
Picture of Ball and Stick Molecule
RnF4
OF6
CH3NH2
BBr3
2
Molecular
Formula
Lewis Structure
ED and
Molecular
Geometry
Hybridization
SCl2
AtF3
SeF4
BrF5
3
Polarity
IMF(s)
Ideal Bond
Angles
Picture of Ball and Stick Molecu
Molecular
Formula
Lewis Structure
ED and
Molecular
Geometry
Hybridization
PCl5
CH2O
C2H6O
(CH3OCH3)
C2H6O
(C2H5OH)
4
Polarity
IMF(s)
Ideal Bond
Angles
Picture of Ball and Stick Molecu
Molecular
Formula
Lewis Structure
ED and
Molecular
Geometry
Hybridization
ClO3-1
BeCl2
NO3-1
BH3
5
Polarity
IMF(s)
Ideal Bond
Angles
Picture of Ball and Stick M
Molecular
Formula
Lewis Structure
ED and
Molecular
Geometry
Hybridization
H2O
CO2
CH3CH2OH
6
Polarity
IMF(s)
Ideal Bond
Angles
Picture of Ball and Stick M
CO32-
1. From the Lewis Structures drawn in the lab, which substance(s) showed resonance.
2. Which substance from this acitivity would have the strongest London Dispersion force. Name three reasons why iyou selected this substance your
explanation
3. In the space below, draw two water molecules hydrogen bonding with each other.
4. In the space below, choose another substance from this lab capable of hydrogen bonding, and draw hydrogen bonding with water
7
5. Choose the two substances from this activity who are likely to have very low boiling points. In terms of their intermolecular forcaes, explain why you
chose them.
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