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Chapter 4: Q.2. (page 128)

Question: Which of the following is not another representation for 2-methylbutane?

a.

b.

c.

d.

Short Answer

Expert verified

Answer

Compound d does not represent the structure of 2-methylbutane.

Step by step solution

01

2-Methylbutane

2-Methylbutane has a chain of four carbon atoms. The second position is occupied by the methyl group.

If the longest chain does not contain any functional group, counting can be started from any side. In either case, the same structure is obtained.

02

Explanation

  1. In the given compound, a chain of four carbon atoms with the methyl group at the second position is present. Therefore, it is the structure of 2-methylbutane.
  2. In the given compound, a chain of four carbon atoms with the methyl group at the second position is present. Therefore, it is the structure of 2-methylbutane.
  3. In the given compound, a chain of four carbon atoms with the methyl group at the second position is present. Therefore, it is the structure of 2-methylbutane.
  4. In this given compound, a chain of four carbon atoms with the methyl group at the first position is present. Therefore, it is not the structure of 2-methylbutane.

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