What is the electron dot structure for C5H8 (pentacarbon octahydrogen)

Can someone show me the dot structure for C5H8? Thanks.

I'll try to draw it ^^ This is pentyne by the way (of the form CnH2n-2), normally you indicate where the triple bond is by putting a number in front. Here it can be on the first and second C (because if you do it on the third or fourth it is again the first or second, counting from the other side). So you can have 1-pentyne (aka propylacetylene) or 2-pentyne (aka ethyl methyl acetylene).

=- indicate triple bond in alkyne; ignor the * (else everything shifted)

1-pentyne:
***************H*H***H
***************|***|****|
H - C =- C - C - C - C - H
***************|****|***|
**************H***H**H

2-pentyne:
****H*************H**H
*****|**************|***|
H - C - C =- C - C - C - H
*****|**************|***|
****H*************H**H

I hope this helps

pentacarbon octahydrogen


First, I would really like to know which group of teachers is

guilty of perpetuating this bogus naming?


Is it "science" teachers who never had much chemistry or

just teachers forced to teach chemistry without any chemistry

background, who depend on others bad worksheets, or what?

Please e-mail me, I'm curious. It's got to have started somewhere,

since it seems to keep popping up like a bad urban legend.


That being said, a C5 alkane would have a molecular

formula of C5H12; the generalized formula for an alkane is CnH(2n+2).

So since it has only 8 hydrogens, it may be either a C5 diene,

a C5 alkyne or cyclopentene. You just can't tell, given no real information