What is the similarity and difference in sigma and pi orbitals ?

1.	What is the similarity and difference in sigma and pi orbitals ?
Answer» Solution :Slmllarity : `sigma and pi` both are BMO (bonding molecular orbitals) and ELECTRON DENSITY is present between two atomic NUCLEUS in both. Difference : The electron density between two CENTRE in `sigma` MO is symmetrical while in `pi` MO electron density is above or below the PLANES and divided in two parts.

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