Question

Which of the following alkanes is tertiary?

• A. \( \text{2-Methylpropane} \)
• B. \( \text{2,2-Dimethylpropane} \)
• C. \( \text{2-Methylbutane} \)
• D. \( \text{n-Butane} \)

Hint:

Tertiary carbon atoms are bonded to three alkyl groups. Look for branching structures to identify tertiary alkanes.

Answer 1

The Correct Option is B

A tertiary alkane features a central carbon atom bonded to three other carbon atoms. For \( \text{2,2-Dimethylpropane} \), the central carbon is linked to three methyl groups, classifying it as a tertiary alkane. The alternative compounds lack a carbon atom bonded to three other carbons.