Give explanation of sigma and pibonds mention by overlapping of which orbitals are sigma and pibonds formed. OR Explain sigma bond form by s-s, s-p and p-p over lapping.

Give explanation of sigma and pibonds mention by overlapping of which

1.	Give explanation of sigma and pibonds mention by overlapping of which orbitals are sigma and pibonds formed. OR Explain sigma bond form by s-s, s-p and p-p over lapping.
Answer» Solution :The covalent bond formed by overlapping of atomic orbitals can DIVIDED in to two TYPES. `sigma`-bond : This type of `sigma` covalent bond is obtained by end to end overlapping of the ends of two atomic orbital having internuclear axis. It is also called axial overlapping. This type of overlapping is obtained by over lapping of atomic orbitals as shown below. Overlapping of s-s orbital : In this type overlapping of two half filled orbitals having one. axis is observed. Overlapping of s-p orbital: In this type there is overlapping between half filled atomics- orbital of one atom-and half filled atom.ic p- orbital of other atom. Overlappingof p-porbitals: Here it is found that overlapping of p-p orbitals DUE to overlapping of half filled p orbital of two atoms is observed. `pi` - bond : In this type covalent bond FORMATION the axes of atomic orbitals that are overlapping remains parallel to each other and it is perpendicular to internuclear axis.