The C-H bond and C-C bond in ethane are formed by which of the following types of overlap?

Answer

To determine the type of overlap that forms the C-H and C-C bonds in ethane (C2H6), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Ethane**:
- Ethane is a simple alkane with the molecular formula C2H6. It consists of two carbon atoms and six hydrogen atoms.

2. **Determine the Hybridization of Carbon Atoms**:
- Each carbon atom in ethane is bonded to three hydrogen atoms and one other carbon atom.
- The steric number (the number of bonds and lone pairs around a central atom) for each carbon atom is 4 (3 C-H bonds and 1 C-C bond).
- Since the steric number is 4, the hybridization of each carbon atom is sp³.

3. **Analyze the C-C Bond**:
- The C-C bond in ethane involves the overlap of two sp³ hybridized orbitals from each carbon atom.
- Therefore, the type of overlap for the C-C bond is sp³-sp³ overlap.

4. **Analyze the C-H Bond**:
- Each hydrogen atom has one electron and can be considered to have an s orbital.
- The C-H bond involves the overlap of one sp³ hybridized orbital from carbon and one s orbital from hydrogen.
- Thus, the type of overlap for the C-H bond is sp³-s overlap.

5. **Conclusion**:
- In summary, the C-C bond in ethane is formed by sp³-sp³ overlap, and the C-H bond is formed by sp³-s overlap.

### Final Answer:
- The C-C bond in ethane is formed by sp³-sp³ overlap, and the C-H bond is formed by sp³-s overlap.