Which of the following alkanes has only primary hydrogen atoms?

Options

A. `2,2,3,3`-Tetramethylbutane
B. `3,4,4,5`-Tetramethylpentane
C. `2,2,4,4`-Tetramethylpentane
D. `2,2,4`-Tetramethylpentane

Answer

A

Explanation

`overset(1^(@))CH_(3)-underset(2,2,3,3-"Trimethylbutane")(underset(1^(@))underset(CH_(3))underset(|)overset(1^(@))overset(CH_(3))overset(|)C-underset(1^(@))underset(CH_(3))underset(|)overset(1^(@))overset(CH_(3))overset(|)C-overset(1^(@))CH_(3))`