What is the hybridization on carbon no. 1 and carbon no. 2? and the no. sigma bonds ? C7H10

To determine the hybridization of carbon atoms in a molecule, we need to count the number of sigma bonds and lone pairs around each carbon atom. The hybridization is based on these counts.

For C7H10, assuming there is only one structure, let's examine the carbon atoms.

Carbon atom at position 1:
First, find the number of sigma bonds attached to carbon atom 1. Looking at the molecular formula, C7H10, we can infer that carbon atom 1 is attached to three hydrogen atoms and one more carbon atom. Since each sigma bond involves two electrons, there are four sigma bonds around carbon atom 1.

To determine the hybridization, we can use the following rules:
- If there are four sigma bonds, the hybridization is sp3.
- If there are three sigma bonds, the hybridization is sp2.
- If there are two sigma bonds, the hybridization is sp.

Therefore, carbon atom 1 has an sp3 hybridization because it has four sigma bonds.

Carbon atom at position 2:
Looking at the molecular formula, carbon atom 2 is attached to one hydrogen atom and two more carbon atoms. Since each sigma bond involves two electrons, there are three sigma bonds around carbon atom 2.

Based on the rules mentioned above, carbon atom 2 has an sp2 hybridization because it has three sigma bonds.

To summarize:
- Carbon atom 1 has an sp3 hybridization and four sigma bonds.
- Carbon atom 2 has an sp2 hybridization and three sigma bonds.

To determine the hybridization on carbon atoms and the number of sigma bonds, we need to know the molecular structure of C7H10. However, without any additional information or a molecular diagram, it's impossible to provide a specific answer.

Here's how you can determine the hybridization and number of sigma bonds on carbon atoms:

1. Draw the Lewis structure of C7H10: Start by drawing the skeletal structure, connecting carbon atoms with single bonds and adding hydrogen atoms. Remember that carbon typically forms four bonds, and hydrogen forms one bond.

2. Count the number of sigma bonds: In the Lewis structure you drew, determine how many single bonds (sigma bonds) each carbon atom is involved in. Count the number of lines between carbon atoms and any attached atoms (hydrogen or other atoms).

3. Determine the hybridization on carbon atoms: Look at each carbon atom in the Lewis structure and count the number of sigma bonds. Based on the number of sigma bonds, you can determine the hybridization using the following rules:
- If carbon has 4 sigma bonds, its hybridization is sp3.
- If carbon has 3 sigma bonds, its hybridization is sp2.
- If carbon has 2 sigma bonds, its hybridization is sp.

By following these steps and providing the molecular structure of C7H10, you should be able to determine the hybridization and number of sigma bonds on carbon atoms.