amphibian

Amphigenic is a term derived from French amphigene. It's about a adjective that allows to refer to chemical element that is part of the group composed of the polonium, the tellurium, the selenium, the sulfur and the oxygen, all located in the same column of the periodic table.

Also known as chalcogens, amphigens present six electrons from Valencia. The etymology of the concept is associated with the capacity of certain elements of create basic or acidic compounds.

The set of antigens is called group 16 or group of oxygen (for its first element), previously named group VI A. While the first three elements are no metals (oxygen, sulfur, and selenium), the remaining two are metalloids (tellurium and polonium).

Amphigens have to accept a couple of electrons to achieve the electronic configuration that characterizes a Noble gas. That is why they usually exhibit a negative oxidation state.

It is important to mention that the oxygen, in its natural state, is the most abundant element in the Land. This antigen can be found free in the atmosphere (O2), combined in water (H2O) and giving rise to multiple oxosalts and oxides. The sulfurMeanwhile, it can be found freely in volcanoes, for example, and combined in sulphides and sulfates.

The uses of ampigens are multiple. If we focus on oxygen, it is used in the medicine, as an oxidizing agent and for bleaching paper. Sulfur is involved in the production of gunpowder, while selenium is used in electronics and electricity.