Lewis Structure of Heptane (C7H16) (n-Heptane)
Heptane (C7H16) is an alkane compound which has seven carbon atoms and sixteen hydrogen atoms. In lewis structure of C7H16, there are six single C-C bonds and sixteen C-H bonds. Heptane is an one constituent in gasoline (petrol) which is widely used as a fuel in automobiles.
Lewis structure of C7H16
Now, we are going to see some specifications and characteristics of lewis structure of C7H16 molecule.
Number of atoms in Lewis structure of C7H16
- There are seven carbon atoms and sixteen hydrogen atoms in the molecule.
- As name suggest n-heptane, there is a linear carbon chain in n-heptane. So there are no sub-carbon chains except the main carbon chain. If we explain in another way, all seven carbon atoms lies on a single carbon chain.
Characteristics of lewis structure of C7H16
Here, we see followings of C7H16 molecule.
- Sigma and Pi bonds around carbon and hydrogen atoms in Heptane lewis structure
- Lone pairs around carbon and hydrogen atoms
- Polarity
Sigma and Pi bonds around carbon and hydrogen atoms in Heptane lewis structure
- There are only sigma bonds around all atoms. There are total of twenty two sigma bonds in the molecule. Among those twenty two sigma bonds, there are sixteen C-H sigma bonds and six C-C bonds. So each carbon has made four sigma bonds.
- Because Heptane is an alkane compound, there are no double bond or triple bonds between carbon atoms. As well, there are no double and triple bonds around any atom.
Lone pairs around carbon and hydrogen atoms in C7H16
- There are no lone pairs around carbon atoms.
- Because Hydrogen atom has made a single bond with Carbon atom, Hydrogen atom cannot keep more lone pairs.
Polarity and use of as a non-polar solvent
Heptane is a non-polar organic compound in chemistry. Because, polarity of C-H bond is very less due to small electronegativity difference between carbon atom and hydrogen atom. Therefore, there are only weak Vanda Vaal Forces between heptane molecules. But due to considerable molar mass, heptane exist as a liquid at room temperature.
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