hydrogen bridge


In the field of chemistry, a hydrogen bond is that link that originates as a product of the attractive force that exists between an oxygen atom and another hydrogen, nitrogen or fluorine atom, which have a negative charge. This attraction is known as “dipole-dipole interaction” and creates a connection between the positive pole of one particle with the negative pole of another.

Through the hydrogen bond it is possible to associate different particles and even different sectors of the same particle. Now, the hydrogen atom, which has a positive charge, is called the donor atom, while the atom of the other elements (oxygen, hydrogen and fluorine) adopts the name of the acceptor atom of the union.

Within DNA, proteins and water, for example, it is possible to find hydrogen bonds and thanks to this, some important phenomena originate, such as the boiling point of water, this is because water represents a covalent particle, which has a hydrogen bond, between the existing hydrogens in one molecule and the oxygens of the next molecule, and it is thanks to this peculiar process that the water begins to create networks that provide it with interesting characteristics.

Many of the characteristics of hydrogen bonds arise from the low intensity of the attraction they present, when compared to covalent bonds, and this is why certain substances can experience modifications in their properties.

Finally, it is important to highlight that hydrogen bonds can have different values ​​with respect to the energy present in their bonds. These values ​​are expressed in KJ/mol (Kilojoules per Mol), which is a unit belonging to energy per amount of matter.