Sunday, January 23, 2011

Molecular geometries that you see everyday!

Everyday items may indeed have shapes similar to the molecular geometries of certain covalent compounds.  Below are some examples:

There are several "linear" objects that we can see in a single day.  A pencil, for example - or even your body when standing straight up.

"Bent" geometries are a bit harder to find.  I noticed that my lamp, which has adjustable joints, can form a stick-and-ball model of a "bent" molecular geometry.

One of the most difficult to find, in my opinion, would definitely have been the "trigonal pyramidal."  I noticed that a foldable stool illustrates the idea of three bonds and one lone pair quite nicely.

If you go driving, you may notice a Mercedes on the streets.  This is where I found an example of the "trigonal planar" geometry.  The logo itself is drawn via connecting the vertices of a triangle inscribed in a circle.

Finally, a "tetrahedrally" shaped item can be easily located by any photographer.  One of their main tools, the tripod, forms this shape almost perfectly.  In fact, when the tripod is un-extended, it could fall under the trigonal pyramidal category.


Linear Geometry Picture:


Bent Geometry Picture:


Trigonal Pyramidal Picture:

Foldable stool:

Trigonal Planar Picture:

Mercedes Logo:

Tetrahedral Picture:


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