1. SUPA Chemistry
Sigma and Pi Bonds

2. Sigma Bonds s Sigma bonds are single Bonds seen in Covalent molecules.
They can be formed by the overlapping of two s orbitals, as in H2.

3. Sigma bonds are seen in HCl by the overlap between an s and a p orbital.

4. Sigma bonds can also be formed by the overlap of a p orbital with an sp hybrid orbital as in BeF2.
A hybrid orbital is a blend of two different orbitals.

5. C2H6 has all sigma bonds

6. Pi Bonds ( p bonds) Pi Bonds are found in double or triple bonds.
A double bond consists of a sigma bond and one pi bond.
A triple bond consists of a sigma bond and 2 pi bonds.
Pi bonds are formed from the overlap of two p orbitals.

7. C2H4 has both s and p bonds