sp hybridization

An atom that is sp-hybridized has two hybrid orbitals comprised of a 1:1  mixture of s- and  p- orbitals. The two sp-orbitals are arranged at a 180° angle from each other (“linear” geometry). In addition, there are two unhybridized p-orbitals each at 90° to the atom. Examples of atoms with sp-hybridization are BeCl2, the C and O atoms in CO2, and alkynyl carbons.