What is Dobereiner Triads? »Its Definition and Meaning [2019]

Dobereiner's triads represent one of the first experiments that were carried out to classify the chemical elements, depending on the similarity in their characteristics, associating them with their atomic weights .The chemist Johann Dobereiner was the attempt to classify the chemical elements, depending on the similarity of their characteristics linking their atomic weights.

Johann Dobereiner was a German scientist who discovered a certain link between the characteristics of some groups of elements, for example the atomic mass of lithium and potassium were very close to that of sodium and the same happened with other elements.made dobereiner try to relate the chemical attributes of these elements, with the atomic weights, appreciating a strong similarity between them and a gradual change from the first to the last, this ended up demonstrating that the elements that are you can see in the periodic table, they have a certain relationship between them, thanks to the analogy between their compounds and their properties.

As already mentioned, Dobereiner also observed three elements, such as chlorine, bromine and iodine, were similar in their properties, with just a small change from the first to the last and realized that the same thing happened with another group of elements, that is why they were given these groups, the name of triads and already by the year of 1850 , had already been discovered at least about 20, which indicated some recurrence among the chemical elements.

The importance of these triads lies, in what would be the first time, that group all elements with equivalent attributes were achieved, ahead of the concept of chemical families, which would come later.