Which of the following compounds contains exactly one tertiary () carbon atom? — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

A $3^\circ$ carbon is bonded directly to three other carbons. Isobutane ($CH_3-CH(CH_3)-CH_3$) has exactly one $3^\circ$ carbon. 2,3-dimethylbutane has two. Neopentane and 2,2-dimethylbutane lack $3^\circ$ carbons (possessing $4^\circ$ carbons instead).