Is c2h4 an example of 2 centre 2 electron bond?

Explanation:

1. 2 Centre 2 Electron Bond:
- A 2 centre 2 electron (2c-2e) bond is formed when two atomic orbitals overlap and share two electrons.
- This type of bond is commonly found in diatomic molecules like H2, O2, and N2.

2. C2H4 Molecule:
- C2H4, also known as ethene, is a hydrocarbon with the chemical formula C2H4.
- The molecule consists of two carbon atoms and four hydrogen atoms.
- Each carbon atom forms three sigma bonds, two with hydrogen atoms and one with the other carbon atom.

3. Bonding in C2H4:
- In ethene, each carbon atom forms a sigma bond with two hydrogen atoms and a pi bond with the other carbon atom.
- The pi bond is a type of 2c-2e bond where the p orbitals of the two carbon atoms overlap sideways to share two electrons.
- This pi bond is responsible for the double bond in ethene.

4. Conclusion:
- Yes, C2H4 (ethene) is an example of a molecule with a 2 centre 2 electron bond in the form of a pi bond between the two carbon atoms.