One would expect a compound with the molecular formula C₄H₁₀ to have a lower boiling point than one with the formula C₇H₁₆.

Question

Quizplus · Accepted Answer

The number of carbon and sulfur atoms are the same in both compounds, but the second compound has more boron atoms than the first one. Boron is less electronegative than sulfur and therefore, it will not be able to form as many strong intermolecular forces (such as hydrogen bonds) as sulfur. This makes the second compound less polar and have weaker intermolecular forces, resulting in a higher boiling point.

One Would Expect a Compound with the Molecular Formula C4H10

One Would Expect a Compound with the Molecular Formula C₄H₁₀