Now, this x could be anything, and here are a few examples. We have methyl chloride, methyl alcohol, or methanol. We have methylamine, and we have methylcyanide. So let's compare methyl compounds to something that we already spoke about methane. In fact, methane is methyl compound where the x has been replaced with an H. Now, methane is the simplest alkane, and methane has symmetry. And that's because the carbon, the central carbon, is attached to four identical H atoms, 1234.