What is hydrogen bridge? »Its Definition and Meaning

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

Through the hydrogen bridge it is possible to associate different particles and even different sectors of the same particle.Now, the hydrogen atom and which presents positive charge , it 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 the DNA, proteins and water, for example, it is possible to find hydrogen bonds and thanks to this, some phenomena originate important, such as the point of boiling water, this is because the water represents a covalent particle , which has a hydrogen bond between the existing hydrogen in a molecule and oxygen of the next molecule, and it is thanks to this peculiar process that water begins to create networks that provide interesting features.

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

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