How many stereoisomers can 2,3-dimethylbutane have?

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Question: How many stereoisomers can 2,3-dimethylbutane have?

Options:

Correct Answer: 2

Solution:

2,3-dimethylbutane has no chiral centers, so it has only 1 stereoisomer.

How many stereoisomers can 2,3-dimethylbutane have?

How many stereoisomers can 2,3-dimethylbutane have?

Step 1: Understand what stereoisomers are. Stereoisomers are compounds that have the same molecular formula and connectivity of atoms but differ in the arrangement of atoms in space.
Step 2: Identify the structure of 2,3-dimethylbutane. It is a branched alkane with a four-carbon chain (butane) and two methyl groups attached to the second and third carbon.
Step 3: Check for chiral centers. A chiral center is a carbon atom that is attached to four different groups. In 2,3-dimethylbutane, none of the carbon atoms are attached to four different groups.
Step 4: Conclude that since there are no chiral centers, 2,3-dimethylbutane cannot have stereoisomers. Therefore, it has only 1 stereoisomer, which is the molecule itself.

Stereoisomers – Stereoisomers are compounds that have the same molecular formula and connectivity of atoms but differ in the spatial arrangement of atoms.
Chirality – Chirality refers to the property of a molecule that makes it non-superimposable on its mirror image, often leading to the presence of chiral centers.
Structural Isomers – Structural isomers are compounds with the same molecular formula but different connectivity of atoms, which can affect the number of stereoisomers.