AP Chem VSEPR Lab

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 / Lewis Structure / ED and Molecular
Geometry / Polarity / IMF(s) / Hybrid- ization / Ideal Bond
Angles / Picture of Ball and Stick Molecule
1.NH3
5+3(1)= 8e-
(# valence e-) / ..
H — N — H
| H / Tetrahedral/
Trigonal pyramidal / / / 3
sp / 109.5°
2.
C2H2 / / / / / /
3.
CH2Cl2 / / / /
Molecular
Formula / Lewis Structure / ED and Molecular
Geometry / Hybrid- ization / Polarity / IMF(s) / Ideal Bond
Angles / Picture of Ball and Stick Molecule
RnF4 / / / / / /
OF6 / / / / / /
CH3NH2 / / / / /
BBr3 / / / / / /
Molecular
Formula / Lewis Structure / ED and Molecular
Geometry / Hybrid- ization / Polarity / IMF(s) / Ideal Bond
Angles / Picture of Ball and Stick Molecule
SCl2 / / / / / /
AtF3 / / / / /
SeF4 / / / / /
BrF5 / / / / / /
Molecular
Formula / Lewis Structure / ED and Molecular
Geometry / Hybrid- ization / Polarity / IMF(s) / Ideal Bond
Angles / Picture of Ball and Stick Molecule
PCl5 / / / / / /
CH2O / / / / / /
C2H6O (CH3OCH3) / / / / / /
C2H6O (C2H5OH) / / / / / /

Molecular
Formula / Lewis Structure / ED and Molecular
Geometry / Hybrid- ization / Polarity / IMF(s) / Ideal Bond
Angles / Picture of Ball and Stick Molecule

ClO3-1 / / / / / /
BeCl2 / / / / / /
NO3-1 / / / / / /
BH3 / / / / / /
Molecular
Formula / Lewis Structure / ED and Molecular
Geometry / Hybrid- ization / Polarity / IMF(s) / Ideal Bond
Angles / Picture of Ball and Stick Molecule
H2O / / / / / /
CO2 / / / / / /
CH3CH2OH
/ / / / / /
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

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.