Alright guys. So let's take a look at that example that left at the bottom of the page. So here I say determine the formula and simple and simplest name of ah, hydrocarbon that contains one double bond and six carbons. So remember one double bond medicinal keen e in, which means the ending starts with E. Remember, the formula is C N H two n so the formula B C six h two times six. So I d. C six h 12. If you have six carbons, remember, your prefix is hex. And because it has a double bond, it's an AL Keen. So it ends with Dean, So the most simplest way we could name it is Hexen. Now we'll get more details in terms of naming Al Keane's. But for right now, we're just gonna say it's a heck seen later, I will learn that it depends where the double bond is to get the complete name of the Al Keen. But for right now, let's not worry about that. So we've seen Al Keynes. We've seen Al Keane's move on to the next section and take a look at all kinds. It's a common thing that we're going to be seen. So come back, click on the next video and see how I approach the AL kind section.