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Lewis Structure of C2H6 (Ethane) Step-by-Step

Ethane is two carbon atoms, single-bonded together, with three hydrogens on EACH of those two carbon atoms.

Carbon atoms bring 4 valence electrons each – that makes 8 total valence electrons brought by carbon to this molecule. Hydrogen atoms bring 1 valence electrons each – that makes 6 total valence electrons brought by hydrogen. Therefore, we have 8+6 = 14 valence electrons to work with in this Lewis Structure.

Each of the single bonds in the molecule ‘uses up’ two electrons; that’s actually all of the electrons we are allotted; there are no “lone pairs” of electrons on this molecule.

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