Determine the exact total number of -hydrogens present in a molecule of 2,3-dimethyl-2-butene, which — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

The structure is $(CH_3)_2C=C(CH_3)_2$. There are four separate methyl groups directly attached to the $sp^2$ hybridized carbons of the double bond. Since each methyl group contains three $\alpha$ -hydrogens, there are $4 \times 3 = 12$ total $\alpha$ -hydrogens capable of hyperconjugation.