The correct IUPAC name of the following structure is :
A
2-ethylpentane
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B
2-propylbutane
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C
4-methylhexane
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D
3-methylhexane
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Solution
The correct option is D 3-methylhexane The longest continuous carbon chain in the molecule has 6 C atoms and this chain is called the parent/ main/principal chain.
The substituents gets the lowest possible number (as per the lowest locant rule).
So, the correct IUPAC name of the above structure is 3-methylhexane