To draw the Lewis diagram for C3H6 (propene), we first need to determine the total number of valence electrons. Carbon has 4 valence electrons and hydrogen has 1. Thus, for C3H6:
- Carbon: 3 x 4 = 12 electrons
- Hydrogen: 6 x 1 = 6 electrons
Total = 12 + 6 = 18 valence electrons.
Next, we place the carbon atoms in the center because they can form multiple bonds. In propene, we have two double bonds and one single bond connecting the carbons. The Lewis structure will look like this:
H H
| |
H - C = C - C - H
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H
Now, let’s analyze the bond characteristics:
Number of C-H Bonds:
In the Lewis structure, there are 6 C-H bonds, as each of the end carbon atoms is bonded to two hydrogen atoms.
Number of C-C Single Bonds:
There is 1 C-C single bond between the first carbon and the third carbon, while the second bond between the first and second carbon is a double bond.
Summarizing the Bond Count:
- Number of C-H bonds: 6
- Number of C-C single bonds: 1
- Number of C=C double bonds: 1
This structure and analysis illustrate the connectivity and bonding characteristics in propene.