Differences between sigma and pi bond

 Sigma bond:

1.It is a type of bond formed by head on collision of orbitals.

2.It is a strong bond.

3.In sigma bond elctron density is on the line joining two nuclie.

4.Ist bond is always sigma bond .

5.Only one sigma bond is possible btween two atoms.

6.Example Its example is hydrogen molecule.H-----H

Pi bond:

1.It is a type of bond formed by side ways overlap .

2.It is weak bond.

3.In pi bond electron density is above or below the bond axis.

4.More then one pi bonds are possible between two nuclie.

5.2nd and 3rd bond is pi bond .

6.Example :Its example is oxygen molecule

O::::O