Which of the following is a constitutional isomer of butane? A) CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃ D) all of these

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Constitutional isomers are the compounds with the same molecular formula but different connectivity of atoms. The molecular formula of butane is C4H10. Option A has different numbers of sulfur atoms, option B is a random string of characters, while option D includes option A, which is incorrect. Option C has the same molecular formula as butane, and upon inspection, it can be seen that it has a different connectivity of atoms, making it a constitutional isomer of butane.

Which of the Following Is a Constitutional Isomer of Butane