The IUPAC name of the compound CH3−CH2−CH2−CH2−C||CH2−CH2−CH2−CH3
is .

2-propylhex-1-ene

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2-butylpent-1-ene

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4-methene octane

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Solution

The correct option is A 2-propylhex-1-ene
Shown below within the dotted lines is the parent chain. It is chosen as parent chain as it is the longest chain which contains the double bond.

Since there are 6 carbons in the parent chain, the word root here is hex. Now, give numbering as double bond gets least number.

$6 C H_{3} - 5 C H_{2} - 4 C H_{2} - 3 C H_{2} - 2 C | | 1 C H_{2} - C H_{2} - C H_{2} - C H_{3}$

Since there is a double bond, the primary suffix will be -ene. The prefix of the compound will be propyl as it has a propyl group attached to the second carbon in the parent chain.

Hence, the IUPAC name of the compound is 2-propylhex-1-ene.

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