In the field of chemistry , is called Salt to that compound which results from the replacement of hydrogen atoms that are part of an acid with certain basic radicals.
The binary salts , also known as neutral salts , are the result of the combination between a metal and a non-metal . According to the formula of this binary type combination, the metal symbol must first be written next to its valence and then the non-metal symbol with its corresponding valence.
Binary salts are one of the three types of salts that exist, to which ternary and quaternary would be added.
We must also bear in mind that in the famous periodic table its two components can be clearly distinguished, since metals are always to the left of the black line, while nonmetals appear in what is the area of the right of that line.
It should be noted, on the other hand, that the nonmetal of binary salts always uses its lowest valence. By naming the nonmetal in the combination termination is used -aurochs .
The traditional nomenclature indicates, with respect to metals, that they should be mentioned with the termination -ico . There is an exception when the metal in question has two valences and in the binary salt the lowest valence is used: in this case, the metal is mentioned with the termination -bear .
Considering these rules of nomenclature and the definition of what tends to be binary salt, we can mention the calcium bromide , he sodium chloride , he plumbous sulfide , he ferric chloride , he aurous bromide and the cobaltic sulfide between binary or neutral salts.
It should be noted that, beyond the traditional nomenclature , you can also appeal to the systematic nomenclature (which includes prefixes on the number of atoms , both of metal and nonmetal) and to stock nomenclature (uses the name of the nonmetal as in the traditional nomenclature and the name of the metal with its valence in parentheses and in Roman numerals). For example: dicobalt trisulfide , iron chloride (III) .
On the systematic we can add that the process is very simple. Specifically, what needs to be done is to start by putting the name of the non-metal finished with the -uro termination, but two prefixes are added. These come to indicate what is the number of atoms of metal and nonmetal.
Examples could be these:
-FEC13, which would be called iron trichloride.
-CO2S3, which would correspond to the denomination of dicobalt trisulfide.
In addition to everything that has been exposed so far about binary salts, it is important that we know that there are several types of them. Thus, for example, we find the halogen, mixed, acidic, basic, neutral halogen binary salts ...
Within the educational field, it is important to know that binary salts become a fundamental part of the subject of Chemistry. Hence, teachers, among many other things, establish numerous exercises and activities for students to learn to identify and formulate binary salts, without forgetting, that they will also emphasize that they can make proper use of the different rules and forms of nomenclature. .