explain-why-the-s-h-bond-in-ethanethiol-is-longer-than-the-o-h-bond-in-ethanol-i

Question

Explain why the S−H bond in ethanethiol is longer than the O−H bond in ethanol if the S and O in the mentioned compounds are both sp³hybridized.

Accepted Answer

Sulfur has a larger atomic radius than oxygen, leading the S−H bond in ethanethiol to be longer compared to the O−H bond in ethanol.

Answer

Oxygen has a higher ionization energy than sulfur, leading the O−H bond in ethanol to be shorter than the S−H bond in ethanethiol.

Answer

Sulfur has a higher electron affinity than oxygen, leading the S−H bond in ethanethiol to be stronger than the O−H bond in ethanol.

Answer

Oxygen has a larger electronegativity than sulfur, leading the O−H bond in ethanol to be more polar than the S−H bond in ethanethiol.