Halogenidiryhmä

Halogenidiryhmä is a group of chemical elements located in Group 17 of the periodic table. These elements are also known as halogens, a name that originates from the Greek word 'halos', meaning'salt', as they were primarily found in compounds with sodium and other metals.

The Halogenidiryhmä includes the elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Although astatine has a very short half-life, the elements are listed in this order based on their atomic numbers.

Halogens are characterized by their tendency to readily accept an electron, which causes them to react with and bond to other elements. This tendency results in their highly reactive nature. In their elemental form, the halogens exist as toxic, pale-colored gases.

A halogen atom will typically accept one electron to become a negatively charged ion or chloride ion. This behavior makes halogens essential in many elemental reactions, particularly in oxidation and reduction reactions. Their role in water and air purification is also significant, with chlorine being commonly used as a disinfectant and water sanitizer.

Their reactivity is intensified by the large electron affinity of the halogens, which is due to the rare gas core's electron configuration completing the subsequent energetically favored electron shells from the half-filled (ns separate) p ban have two isolated xo electrons get the configuration of etc Concern over the use and disposal of halogens is due to environmental and health issues associated with their toxic and often developmentally and carcinogenically hazardous effects.