π bonds arise from the sideways overlap of 2 atomic p-orbitals.π bonds cannot form until sigma bonds are formed so lead to the formation of double or triple bonds.
In a double covalent bond, four electrons are shared between two atoms.In an oxygen molecule (O=O or O2 ) the two oxygen atoms have a double bond between them and share two pairs of electrons.
In a double covalent bond, four electrons are shared between two atoms.In an oxygen molecule (O=O or O2 ) the two oxygen atoms have a double bond between them and share two pairs of electrons.