So let's begin. So, in part a, we want to draw the lewis structure for ch three. Now our first step is to figure out the amount or the number of balanced electrons in this molecule, in this ch three molecule. So let's begin by drawing out our carbon electron configuration. So we have two electrons that go into one s orbital, two electrons that go into the two s orbital, and two more electrons that go into our two p orbital. For h, we have only one electron, and that one electron goes into our one s orbital.