dipole-dipole

[lasarro]

How does NH2OH have a dipole-dipole intermolecular force? That means that NH2OH would have to be a polar molecule, but the electronegativity difference between all the elements is very small. Could someone please explain this? Maybe a picture showing the dipole moment if you could find one?

[Charisse Vu 1H]

The OH group on the molecule is what makes the molecule polar. Its shape is a tetrahedral and the OH group is much more negative than the rest of the molecule.

[kpang_4H]

The electronegativity difference is big between the N and the H and also the O and the H which creates dipoles.

[Melvin Reputana 1L]

There is a dipole-dipole interaction on NH2OH because the electrons within the molecule are unequally shared. There is a nitrogen atom and oxygen atom that have higher electronegativities than hydrogen which means that the electrons would be pulled closer to these atoms. A good indicator if a molecule is polar or not in a tetrahedral shape is whether all the terminal atoms are of the same element; however, this molecule has a molecular shape of trigonal pyramidal due to only having three terminal atoms and 1 lone pair on the central atom.