lewis dot diagram for c8h18?

Question

the lewis dot diagram or shape of this element

Answer 1

First, a question - which isomer? That's octane, and it can have a straight chain or several different branched chains. At any rate, I have no idea how to draw a Lewis structure in this answer block, so I'll try to use words:

After determining the isomer, lay out the carbon skeleton. There are no double or triple bonds, so there will be 8 'dots' around each carbon, two on each side, two top, two bottom. That means that the space between adjacent carbons will look like this:

C:C

Now put the H's at each carbon at the exposed electron pairs. There should be 18 open slots. Do not add any more 'dots'.

That's it.

Answer 2

You can look at the structure here http://en.wikipedia.org/wiki/Octane

Just replace each line with two dots ( : )