Polar Molecules

Today was about polar molecules.

1. Draw Lewis structure - use the rules!
2. Consider the central atom, based upon the number of attached atoms and number of lone electron pairs predict the 3-D shape [see shape link below step #3]
3. Using the 3-D shape, identify all bonds as polar/nonpolar; if polar bonds exist - take into account their relative position to one another - do they polar forces cancel?

shape link: http://www.webchem.net/notes/chemical_bonding/shapes_of_molecules.htm

For CH4 SO3 PCl3 SBr2 and SF2 you were asked to draw a Lewis structure, 3-D structure and identify the polarity of the molecule

In addition for p230 4abcg you were to provide 3-D structures and identify polarity of the molecule

A few polar molecule links:

http://preparatorychemistry.com/Bishop_molecular_polarity.htm

http://www.ausetute.com.au/molpolar.html

And one that goes over electron configuration type stuff [Hey, isn't there a quiz coming up soon?]

http://www.webchem.net/notes/atomic_structure/electron_configuration.htm

[If you click the AS Chemistry tab, then chemical bonding, then breaking the octet - you shall find some interesting info. Looking at other information under the AS Chemistry Tab yields many other gems as well. :<]

[In honour of all of this talk about polar bonds, I leave you with the following: What do you call polar bears when they get caught in the rain? answer: drizzly bears. :<)