Count the total number of primary () hydrogen atoms in one molecule of 2,2,4-trimethylpentane (isooctane).

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Question

Count the total number of primary ($1^\circ$) hydrogen atoms in one molecule of 2,2,4-trimethylpentane (isooctane).

Prashant Kotian · Accepted Answer

Correct answer: 15. The structure of 2,2,4-trimethylpentane is . It has five primary carbon atoms (the terminal methyl groups). Each primary carbon has 3 hydrogens. Total H atoms = .

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