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The Structure of an Ethane Molecule.

A carbon atom has 4 electrons in its outer shell.
Carbon is in group 4 of the periodic table.
A hydrogen atom has 1 electron in its outer shell.
Hydrogen can only form 1 bond.

The six hydrogen atoms will each share their 1 electron with carbon
to form six carbon - hydrogen covalent bonds.
The t
wo carbon atoms will each share their 1 electron to form
one carbon - carbon covalent bond and make an ethane molecule (C2H6).
Ethane Molecule showing Covalent Bonding Dot and Cross

The pairs of shared electrons between the hydrogen and the carbon atoms
show single covalent bonds - see covalent bonding.

Ethane is commonly represented by the structural formula

Ethane Structural Formula

where the single lines between the atoms represent single covalent bonds.

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