2. Intra Molecular Force Hydrogen Bonding
Ramesh kumar
Intra Molecular Force Hydrogen Bonding

3. Objectives At the end of this presentation the student will be able to….
Definition Hydrogen & Hydrogen bond Concept of Hydrogen bonding
Explain list the importance of hydrogen bonding in biological molecules

4. Intra molecular force Definition
An intra molecular force is any force that holds together the atoms making up a molecule or compound. They contain all
types of chemical bound . They are stronger than inter molecular force which a present between atoms or molecules that are not actually bonded .
Intra molecular hydrogen bond formed between two different atom in the same molecule.

5. Introduction of hydrogen.
What is hydrogen?
Hydrogen chemical element that exists as a gas at room temperature. When hydrogen gas burn in air it form water.
Hydrogen has the smallest atom of any element. A hydrogen atom contain one proton and only one electron. The proton is the center or nucleus of the hydrogen atom and the electron travels around the nucleus.
Pure hydrogen exists as hydrogen gas in which pair of hydrogen atom bond together to make molecules .
How was hydrogen found?
Discover by Henry Cavendish.
Hydrogen was discover by London.
It was discover in the year of 1766.

6. The hydrogen atom consisting the proton in the center of the nucleus of the hydrogen atom and the electron traveling the nucleus .

7. Hydrogen bond Example Plural hydrogen bond
Hydrogen bond is a chemical bond between the hydrogen atom and an electronegative atom.
Example
An example of hydrogen bond is water molecule bonding together in the form of ice.
Plural hydrogen bond
A weak bond in which a hydrogen atom in one molecule is attracted to an electronegative atom (usually nitrogen or oxygen) in the same or different molecules.

8. Hydrogen bonding What is hydrogen bonding?
Hydrogen bonds are the attractive force between the hydrogen attached to an electronegative atom of one molecule and an electronegative atom of a different molecule.
Hydrogen (H) needs to be attached to a highly electronegative oxygen (O) fluoride (F) nitrogen (N) atoms.
The positive and negative atoms or each of the water molecule attract each other this electrostatic attraction is called hydrogen bonding.

9. Hydrogen Bond Examples
A hydrogen bond is the chemical bond in which a hydrogen atom is attracted to an electromagnetic atom. It is responsible for many of the properties of water.

10. Everyday Hydrogen Bonds
Hydrogen bonding occurs most famously between water molecules. When one molecule of water attracts another the two can bond together; adding more molecules results in more and more water sticking together.
Human DNA is an interesting example of a hydrogen bond. In fact, the hydrogen bonding that occurs between base pairs in a strand of DNA results in DNA’s familiar double helix shape. This hydrogen bond actually enables the replication of DNA strands.
Hydroflouric and formic acids have a special type of hydrogen bond called a symmetric hydrogen bond. This bond is much stronger than a regular hydrogen bond, and can be seen in these acids when they are kept at a high pressure

14. Refernce .

15. Question?
Any question?