Magnetism is inversely proportional to distance
this means that if distance increases magnetic attraction force decreases
The longest hydrocarbon chain in the given compound is hexane, therefore it is the parent chain to be considered with one methyl group attached to the 3rd carbon and one chloro attached on the 2nd carbon, therefore the name of the compound is 2-chloro-3-methylhexane
Umm i don’t get it, is it a joke?