What name is given to the type of bond formed by the overlap of the following atomic orbitals?
(1) Two s orbitals
(2) An s orbital and a p orbital
(3) Two p orbitals overlapping end-to-end along an axis
(4) Two p orbitals overlapping side-by-side
(5) An s orbital with an sp2 hybrid orbital
(6) Two sp3 hybrid orbitals