Now, when these two methyl radicals begin to approach one another, the lobes, which are approximately two p, become approximately SP three hybridized. And that simply means that as they approach one another, these green sections become larger and larger, and these blue sections become smaller and smaller. And eventually, when they come close enough, there is an overlap between these two SP three hybridized orbitals, and they form what we know as a covalent bond. And we get our ethane molecule, in which every single bond is SP three hybridized. Once again, to build methane I'm sorry, to build this should be ethane. To build ethane, we begin with two methyl radicals.