Calculate the total number of primary () hydrogen atoms in one molecule of 2,2,4-trimethylpentane. — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

The structure $CH_3-C(CH_3)_2-CH_2-CH(CH_3)-CH_3$ has five terminal methyl groups ($1^\circ$ carbons). Each $1^\circ$ carbon has 3 hydrogens. Total $1^\circ$ hydrogens = $5 \times 3 = 15$.