00:02
Hi, in this problem from organic compounds in the atomic properties of carbon, we are given some incorrect names of organic compounds.
00:11
We have to write the structures based on them and also we have to write the correct name for that compound.
00:18
So the first one is four methyl hexane.
00:22
Hexane means it has six carbon atoms in the chain and there is a methyl group which here is marked as four.
00:28
So on the basis we can write the structure as shown here.
00:31
See it's three ch 2, ch2, ch2, ch, having methyl group bonded to it, ch2, ch3.
00:47
Now, if we see in this compound, only one carbon atom is substituted, and if we count from the right side, this carbon gets the number three, which is less than four.
01:00
So this is the correct method of numbering the carbon atoms and on this basis, the name of the compound correctly can be written as 3 methyl hexane.
01:22
Then we have the next incorrect name, 2 ethyl pentane.
01:27
It has 5 carbon atoms as per this name and there is ethyl group at carbon 2.
01:33
So we can write the structure as shown here...