CH 334  Fall 2002

Worksheet #1

1. For each of the following molecules, indicate formal charge where necessary. All lone pairs and hydrogen atoms are shown.

 



2. Propyne has the condensed formula CH₃CCH. In the space below, give the correct Lewis structure of propyne, and a 3-D hybrid orbital drawing in the spaces provided.

 

Assign hybridization to each carbon, nitrogen and oxygen in the molecules below:

4. Sarin is a nerve gas that can be used in chemical warfare. It is an extremely active acetyl cholinesterase inhibitor which cause respiratory paralysis. The phosphorous atom in the sarin molecule seems to be breaking the octet rule. How is this possible? Phosphorous is in the third period and has additional d orbitals, so it can accommodate more than 8 electrons.