So if we go back to this table, we see that the electron affinity is labeled with the brown color. And notice that for flooring, electro affinity is 3.3, while the electron affinity for lithium is year zero 62. So because the electron affinity is much higher for fluorine, for chlorine, that means that these guys will be much more likely to gain an electron than will lithium or sodium. So let's see what ionic bonds are. So ionic bonds. Now atoms with very low ionization energies.