what is the name of the aromatic benzene compound containing 1 ethyl and 3 iodine? i answered 1-ethyl-3-iodobenzene and that is not correct? i am so confused.

Where are the I atoms attached

there is only one and it is attached at the 3rd intersection. CH2-CH3 is at the top, so point 1, and Iodine is at point 3.

The correct name for the compound you described is actually 1-iodo-3-ethylbenzene. I can help explain why this is the correct name.

When naming aromatic compounds, we want to number the carbon atoms in the benzene ring starting from one of the substituents. In this case, the ethyl group is attached at the first carbon atom of the benzene ring, so we start numbering from there.

Now, let's look at the position of the iodine substituent. It is attached to the third carbon atom of the benzene ring. Therefore, we denote this substituent as "3-iodo."

Finally, we indicate the presence of the ethyl group by adding it as a prefix before the name of the benzene ring. So, we use "ethyl" to represent the group attached at the first carbon atom of the ring.

When we put it all together, the correct name is 1-iodo-3-ethylbenzene.