# What is the electron dot structure of an alkyne? [closed]

I am trying to determine the electron dot structure of an alkyne like $$\ce{C2H2}$$.

I know that hydrocarbons with at least one carbon-carbon triple bond are called alkynes, and their general formula is $$\ce{C_{n}H_{2n-2}}$$, where $$n$$ is number of carbon atoms.

So what will the electron dot structure of $$\ce{C2H2}$$ look like?

## closed as off-topic by Loong♦, ron, Klaus-Dieter Warzecha, tschoppi, bonJun 19 '15 at 19:23

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• Have you drawn electron dot structures for alkenes? Recall that pairs of dots represent covalent bonds. As you know that an alkyne has a carbon-carbon triple bond, this should indicate the correct number of dots between the carbons. – Richard Terrett Sep 25 '12 at 12:46

Carbon needs four electrons to fill its octet. In a $$\ce{C-H}$$ covalent bond carbon shares one electron with hydrogen. A triple consists of one σ covalent bond and two π covalent bonds. The carbons share two electrons in each of these bonds; in total six electrons are shared between them. You can draw this as a dot structure:
$$\ce{H:C:::C:H}$$