Hydrogen Bonding

11th Chemistry NCERT notes

Hydrogen Bonding

Hydrogen bond can be defined as the attractive force which binds hydrogen atom of one molecule with the electronegative atom (F, O or N) of another molecule. It is represented by dotted lines. The chains possess a zig-zag structure.

Hydrogen Bonding

(Hydrogen bond is purely electrostatic and a weak bond. The strength of the strongest hydrogen bond is about 5-10 kcal per mol. The more the electronegativity of atom involved in H-bonding, the more is the bond strength, e.g.,

Hydrogen Bonding

Types of hydrogen bonds are

  • Intermolecular H-bonding: H-bonding involving two or more molecules.
  • Intramolecular H-bonding: H-bonding within a molecule.

Intermolecular H-bonding:

It is formed between two different molecules of the same or different compounds. For example, H-bond in case of HF molecule, alcohol or water molecules, etc.

Intramolecular H-bonding:

It is formed when hydrogen atom is in between the two highly electronegative (F, O, N) atoms present within the same molecule. For example, in o-nitrophenol the hydrogen is in between the two oxygen atoms.

Intramolecular H-bonding

Strength of bonds

Ionic bond > covalent bond > metallic bond > H-bond


How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

As you found this post useful...

Follow us on social media!

We are sorry that this post was not useful for you!

Let us improve this post!


Please enter your comment!
Please enter your name here