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Question
Assertion :The correct IUPAC name of H3C−CH(CH3)−CH2−CH(CH3)−CH2−CH3 is 2,4-dimethylhexane not 3,5-dimethylhexane. Reason: In case the parent chain has two or more substitution numbering must be done in such a way that the sum of the position number of the locants on the parent chain is the lowest possible.
Assertion :The correct IUPAC name of H3C−CH(CH3)−CH2−CH(CH3)−CH2−CH3 is 2,4-dimethylhexane not 3,5-dimethylhexane. Reason: In case the parent chain has two or more substitution numbering must be done in such a way that the sum of the position number of the locants on the parent chain is the lowest possible.
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Solution
The correct option is A If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
The correct IUPAC name for the compound is 2,4-dimethylhexane, not 3,5-dimethylhexane. In this case, the parent chain has two substituents, thus numbering is done in such a way that the sum of the locants on the parent chain is the lowest possible, which is 2 + 4 = 6 and not 3 + 5 = 8.
The correct IUPAC name for the compound is 2,4-dimethylhexane, not 3,5-dimethylhexane. In this case, the parent chain has two substituents, thus numbering is done in such a way that the sum of the locants on the parent chain is the lowest possible, which is 2 + 4 = 6 and not 3 + 5 = 8.
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