What is the difference between isobutyl and sec-butyl?

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Solution

The point of differences between isobutyl and sec-butyl are discussed below:
Isobutyl
Sec-butyl
According to IUPAC nomenclature, the branching takes place at the second carbon atom of the carbon chain.
According to IUPAC nomenclature, the branching takes place at the first carbon atom in the longest carbon chain.
The structure of isobutyl is shown below:
The structure of sec-butyl is shown below:
Isobutyl forms isobutyl compounds such as isobutyl alcohol.
Sec-butyl forms secondary-carbon compounds such as secondary alcohol.

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Isobutyl	Sec-butyl
According to IUPAC nomenclature, the branching takes place at the second carbon atom of the carbon chain.	According to IUPAC nomenclature, the branching takes place at the first carbon atom in the longest carbon chain.
The structure of isobutyl is shown below:	The structure of sec-butyl is shown below:
Isobutyl forms isobutyl compounds such as isobutyl alcohol.	Sec-butyl forms secondary-carbon compounds such as secondary alcohol.