So our next functional group is the alkyl halide, and the alkyl halide really tells you what it is right at the beginning. "Alkyl" has to do with carbon, so that would be an R. Remember that I said R can be used for any carbon group. And "halide" is a halogen. So remember that the letter that we use for halogen is X. So the abbreviation for an alkyl halide is RX. Anytime you see RX, we're talking about an alkyl halide. Okay? So like I say, right here, it's any R group that's directly attached to a halogen, alkyl halide. This is a very important functional group for Organic Chemistry 1 especially.
And, the degree of the alkyl halide, because remember I told you we were talking about degrees here, is going to be determined in the same way as a hydrogen. Okay? So remember how do we determine degrees with hydrogen? We would look at the carbon it's attached to and say how many other carbons it is attached to. Okay? So here I have 3 different alkyl halides for you. You can tell these are all carbon groups. I'm going to call this one A, B, and C. These are all halogens directly attached to R. And now what I want you guys to do is tell me if they're primary, secondary, or tertiary. Okay? So go ahead and look at the first one. Tell me, what do you guys think?
