The atomic orbitals of two iodine atoms combine to form the diatomic molecule. Use the periodic table to determine the atomic orbitals that overlap to form the molecule and the symbol of the noble gas that has the same electron configuration as the electron configuration of each bonded iodine atom. For example, the 2p atomic orbitals of fluorine atoms overlap to form the molecule. The noble gas that has the same electron configuration as that of each bonded fluorine atom is . To enter the atomic orbitals that overlap and the corresponding noble gas, you would enter 2p,Ne.