Introduction:
2-methyl propane, also known as isobutane, is a branched hydrocarbon with the formula C4H10. The molecule has four carbon atoms arranged in a chain with a methyl group attached to the second carbon atom.

Conformational Analysis:
To determine the most stable conformer of 2-methyl propane, we need to consider the different possible arrangements of atoms in space, known as conformers. The two most stable conformers are the anti and gauche conformers. The anti conformer has the two largest groups in the molecule positioned opposite to each other, while the gauche conformer has the two largest groups positioned next to each other.

Anti-Conformer:
The anti-conformer of 2-methyl propane has the methyl group and the hydrogen atoms on the second carbon atom positioned opposite to each other. This arrangement minimizes steric hindrance between the methyl group and the hydrogen atoms. This is the most stable conformer of 2-methyl propane.

Gauche-Conformer:
The gauche-conformer of 2-methyl propane has the methyl group and the hydrogen atoms on the second carbon atom positioned next to each other. This arrangement results in steric hindrance between the methyl group and the hydrogen atoms, making it less stable than the anti-conformer.

Conclusion:
In conclusion, the most stable conformer of 2-methyl propane is the anti-conformer due to the minimized steric hindrance between the methyl group and the hydrogen atoms. This is important to consider when studying the reactivity and properties of 2-methyl propane in various chemical reactions.