Re: Electron Dot and Lewis Stucture for Compounds

Propane is actually quite easy.

Every carbon has 4 electrons available for bonding (4 dots).
Every hydrogen has 1 electron available for bonding (1 dot).
Propane has 3 carbon atoms and 8 hydrogen atoms.
Write the first carbon down and place 4 dots around it (one on each side). We need to add 3 hydrogens (with their 3 dots) around the carbon. You should have 2 dots between each hydrogen and the carbon atom. Write the second carbon down beside the first and add the 4 dots around it. There should be 2 dots between the carbon atoms. Add the 2 hydrogens on this carbon (along with their 2 dots). Finally write down the last carbon (with 4 dots and the last 3 hydrogen (with 3 dots). 

What you should have is 2 dots between each hydrogen and carbon and 2 dots between the carbon atoms. There should be a total of 3 x 4 + 8 dots (20 dots). Each pair of dots represents a bond.

Lance


--- In [email protected], "Christina Olsen" <ninaashley2014@...> wrote:
>
> I am very confused about where the dots go on the Lewis Stucture for Propane.
>




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