00:01
We need to name this molecule, right? so, 1, 2, 3, 4, 5, 6, 7, 8.
00:11
8 carbon atoms are there, right? and here on third carbon atom, there would be an ethyl group, right? here on this atom, it would be again ethyl group.
00:30
So, what does it mean? we need to take a longest chain in an alkane right so this is alkane because single bond is only present so we will take the nearest what we choose is from here you get the ethyl group nearer than from this side right inside right so that is why we are numbering from here one two three four five 5, 6, 7, 8.
01:00
So this ethyl group anywhere is given priority, right? so on third carbon, you have one ethyl group.
01:10
And ethyl means two carbon atoms are there, right? methyl means c is only present, right? but two cs are present, that means this is an ethyl group.
01:21
So that means at third and fourth, you have a ethyl group, right? right.
01:28
Each carbon of 3 and 4 contains 1 ethyl group.
01:34
Right...