CHEM Question!!! HELPPP

Question

why does hydrogen have a lower boiling point than hydrogen bromide in terms of intermolecular forces? also could you explain how intermolecular forces affect all boiling points? thankss

Answer 1

When you look at the molecules each one has different intermolecular forces. Hydrogen bromide has both dipole-dipole forces and dispersion forces. The dipole forces are present because the hydrogen bromide bond is polar covalent. This results in a slight negative charge on the bromide and a slight positive charge on the hydrogen. The positve end of one molecule can attract the negative end of another. Dispersion forces present are present in all molecules and atoms. It is caused by instantanous dipoles. These happen when this happens when there are more electrons on one side of the nucleus than the other. Basically the more electrons there are the more likely they will attract one another. Hydrogen has the least amount of intermolecular forces. Hydrogen only has Dispersion forces and only two electrons. The more intermolecular forces the harder it is to put the molecule into the gas phase.

Answer 2

Hydrogen has a weak intermolecular force because it gives out it's electrons easilly(since in group1) an u know that elements like carbon have tougher bounds because they share electrons that is why they are hard to break or melt down.(higher melting an boiling points.I hope it helps