Hydrogen Bonding

[salvadorramos3k]

Can someone please explain where hydrogen bonding occurs? For example, if hydrogen is in the middle of a molecule, can hydrogen bonding still occur or does it have to be on the outer part of the molecule?

[Eesha Chattopadhyay 2K]

In order for a hydrogen bond to form, it must be covalently bonded to Fluorine, Oxygen, or Nitrogen and it must be with a Fluorine, Oxygen, or Nitrogen atom with a lone pair. For example, the hydrogens in H2O interact with the Oxygen in water molecules (which has 2 lone pairs). Also, since Hydrogen only has an s orbital, it can only be on the outside of a molecule (it can only make one bond so it cannot be a central atom).

[LeAirraBullingor2k]

Hydrogen bonding occurs between Hydrogens that are connected to Nitrogen, Oxygen, and Fluorine

[Anna Chen 1K]

Hydrogen bondings occurs when H bonds to either F, O, or N.

[AnayaArnold_3L]

You should also know that h-bonding only occurs when the hydrogen is directly attached to N,O,F.

[emma brinton_3B]

hydrogen bonding occurs between molecules and it happens with H and F,N, or O

[Amy Xiao 1I]

It should also be noted that if O happens to have 2 lone pairs, H-bonding can happen at each of those sites, meaning that O can H-bond twice.

[Astrid Lunde 1I]

Hydrogen bonding occurs when the hydrogen bonds with N,O or F

[Shutong Hou_1F]

Hydrogen bonding occurs between a hydrogen atom that is bonded to N/O/F and a N/O/F atom with at least one lone pair.

[Reagan Smith 1H]

As stated by others, hydrogen bonding can only occur with N, O, and F. The hydrogen that is going to bond must bond to one of those three atoms AND must already be bonded to either N, O, or F. Also, hydrogen will never be the central atom so you don't have to worry about that coming up:)

[Gustavo_Chavez_1K]

Hydrogen bonding only occurs in molecules where hydrogen is covalently bound to either nitrogen, fluorine, or oxygen. This is because these three elements are extremely electronegative and so are very attracted to hydrogen.

[Sabrina Galvan 3J]

Hydrogen bonding occurs when an H atom is bonded to a more electronegative atom, N, O, or F. The higher electronegativity of these atoms pulls on Hydrogen's only electron closer to themselves. This causes the more electronegative atoms to have a partial negative charge and the hydrogen atoms to have a partial positive charge. These partial charge interact with other molecules experiencing the same phenomenon, causing them to attract the partial positives and negatives, causing the hydrogen bonding.

[John Calonia 1D]

Are hydrogen bonds permanent like other bonds or are they more of a temporary phenomenon like induced dipoles?

[Libby Dillon - 1A]

Hydrogen bonding occurs at very specific locations and many criteria must be present in order for a hydrogen bond to occur. Hydrogen bonds exist with molecules that contain Nitrogen, Oxygen, and Fluorine atoms. Additionally, there must be a Hydrogen atom covalently bonded to an electronegative atom, and it must be close to another electronegative atom with an available lone pair.