Identify the specific chemical species from the following list that possess exactly six -hydrogens a — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

The isopropyl cation has two $\alpha$ -methyl groups ($2 \times 3 = 6\ \alpha$ -H). Isobutylene has two methyl groups on the $sp^2$ carbon ($6\ \alpha$ -H). 2-Butene has one methyl group on each $sp^2$ carbon ($3 + 3 = 6\ \alpha$ -H). The ethyl cation only possesses one methyl group ($3\ \alpha$ -H).