The number of electrons that a chemical element has to give up or needs to complete the last energy level is known as valence.
Valencia is a term that has multiple meanings. From the perspective of chemistry , for example, valence is the word that identifies the number that accounts for the combination possibilities that an atom has with respect to others to constitute a compound . It is a measurement related to the number of chemical bonds established by the atoms of chemical elements.
There are different kinds of valence in chemistry. The maximum positive valence is the positive digit that reflects the highest capacity of an atom to combine and which is the same for the group to which it corresponds in the periodic table of elements . The negative valence , on the other hand, is the negative digit that shows the possibilities of the atom to be combined with another that has a positive valence.
Valencia in biology and other areas
In biology , valence is the ability of an antibody to be combined with an antigen .
For psychology , meanwhile, valence accounts for the attraction ( positive valence ) or aversion ( negative valence ) caused by a certain object or situation. The concept is also used to classify emotions. Fear, sadness, and anger, for example, have negative valence, while joy or excitement have positive valence. When there is a conflict between positive and negative valences, we speak of ambivalence .
Valencia in graph theory , on the other hand, refers to the number of edges that impinge on the vertex. An isolated vertex is one that has degree 0.
It is possible to distinguish between the empty graph (formed only by isolated vertices), the regular graph (all the vertices have the same degree), the undirected graph and the complete graph , among other graphs.
The Plaza del Ayuntamiento in Valencia is among the most important in the Spanish city.
The term in Spain
Valencia, as a city in Spain, is the capital of the Valencian Community and the third largest city in terms of population nationwide. It was founded in 138 BC and is located on the banks of the Turia River .
The Orange Blossom Coast ; Malvarrosa Beach next to the Mediterranean Sea ; the Albufera Natural Park ; the Carmen neighborhood in the Old City ; Cabanyal in Maritime Towns ; the City of Arts and Sciences with the Oceanogràfic ; the Silk Exchange ; the Museum of Fine Arts of Valencia ; the Fallero Museum ; the Botanical Garden of Valencia ; Gulliver Park ; and the Bioparc Valencia are among the main tourist attractions of the autonomous community, where events such as the San Vicente Ferrer Festival and the Benicàssim Festival are held and you can enjoy dishes such as traditional Valencian paella and arroz a banda.
The Valencia Football Club , in this framework, is a club that competes in the First Division of Spain and is fifth nationally in titles won. The Mestalla Stadium is the venue where they play their home games. Another important club in Valencia is Levante Unión Deportiva .
The founding of the University of Valencia took place in 1499.
Valencia Fair
Feria Valencia is the name given to the first Spanish fair organization , founded in 1917 in Benimánet . The dimensions of its property place it in fourth place internationally, from largest to smallest. Every year it is the venue for more than one hundred events that allow entrepreneurs from different sectors to hold exhibitions , promote their products and services, in order to help expand their businesses and continue collaborating with the economic growth of the nation.
It is worth mentioning that this is a non-profit association, although this does not mean that money is not generated with each event; Every year, both the fairgrounds with their sales and the third-party companies that collaborate with cleaning, feeding and assembly tasks, produce more than one billion euros .
The key to the success of this institution lies in the fact that it helps keep the country's different ventures going, offering professionals the opportunity to meet with their potential clients to make them aware of the advantages of its services, and close deals based on trust. of someone who tries a product before buying it. Tourism plays a very important role, since a considerable percentage of the public that attends Feria Valencia year after year is foreigners who visit the Spanish city; Some come to it out of curiosity while enjoying their vacations, and others do so intentionally, with a view to making investments.
On the other hand, it has a strategic location, with easy access from the main points of the city, such as the Port of Valencia and the airport; Accessing the fair , in this way, is easy for both local people and those who visit from anywhere in the world. In addition, it has an updated and easy-to-navigate website, which allows you to organize an event, check its position on the map and view the facilities in a complete and dynamic virtual model.