What Is A Hybrid Orbital?

	are a type of atomic orbital that results when two or more atomic orbitals of an isolated atom mix (the number of hybrid orbitals on a covalently bonded atom is equal to the number of atomic orbitals used to form the hybrid orbitals),
	are used to describe the orbitals in covalently bonded atoms (hybrid orbitals do not exist in isolated atoms),
	have shapes and orientations that are very different from those of atomic orbitals in isolated atoms,
	in a set are equivalent, and form identical bonds (when the bonds are to a set of identical atoms), and
	are usually involved in sigma bonds in polyatomic molecules; pi bonds usually involve the overlap of unhybridized orbitals.