Question

IUPAC name of Gammaxene is:
[A] Benzene hexachloride
[B] hexachlorobenzene
[C] 1,2,3,4,5,6, hexachlorobenzene
[D] 1,2,3,4,5,6, hexachlorocyclohexane

Answer 1

Hint: Gammaxene is also known as lindane. The chemical formula of gammaxene is ${{C}_{6}}{{H}_{6}}C{{l}_{6}}$. Indirectly, we call it benzene hexachloride.

Complete answer:
Gammaxene is an organometallic compound and it is generally used as an agricultural insecticide.
We can prepare gammaxene by treating benzene with chlorine in absence of oxygen. The reaction is carried forward by sunlight, which means it is a photochemical reaction.

From the above reaction of preparation of gammaxene we can understand that the chemical formula of gammaxene is${{C}_{6}}{{H}_{6}}C{{l}_{6}}$.
 As we know, IUPAC is a method of naming organic compounds following the rules given by the International Union of Pure and Applied Chemistry.
Now as we know the formula of gammaxene, we can find out its IUPAC name following the guidelines of IUPAC.
As we can see, there is a six membered cyclic ring in gammaxene therefore its IUPAC name will end with cyclohexane.
Next, we look for substitutes. Here, every carbon has a chlorine atom substituted to it. According to IUPAC, we must mention the substituents in alphabetical order and with the number of the carbon atom it is attached to. Here, there are 6 chlorine atoms attached to every atom thus, the IUPAC name of gammaxene will be 1,2,3,4,5,6,-hexachlorocyclohexane.

Therefore, the correct answer is option [D] 1,2,3,4,5,6, hexachlorocyclohexane

Note: Gammaxene is the gamma isomer of hexachlorocyclohexane. There are two more isomers of hexachlorocyclohexane, they are alpha-HCH and beta-HCH and they are even more toxic than gammaxene.In humans, gammaxene affects the liver, kidneys, nervous system and is also considered carcinogenic (cancer causing compound).