Metalloid
A metalloid is an element that possesses a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine.
About Metalloid in brief
A metalloid is an element that possesses a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine. Metalloids have a metallic appearance, but they are brittle and only fair conductors of electricity. They are used in alloys, biological agents, catalysts, flame retardants, glasses, optical storage and optoelectronics, pyrotechnics, semiconductors, and electronics. The electrical properties of silicon enabled the establishment of the semiconductor industry in the 1950s and the development of solid-state electronics from the early 1960s. No widely accepted definition of a metaloid exists, nor any division of the periodic table into metals, nonmetalloids, and metaloids. On average, seven elements are included in such lists; seven out of 12 elements are listed in individual lists, such as James almsley, et al. The inclusion of antimony and ast atine as metall steroids has been questioned. Other elements that are occasionally classified as metalls include hydrogen, beryllium, nitrogen, phosphorus, zinc, gallium, tin, iodine, lead, bismuth, and radon. The number of metalloidal elements depends on what classification criteria are used, and the identities of these elements depend on what classifications are used.
Classifying an element as a meetalloid has been described as “arbitrary” by Sharp, Sharp, and Hawkes; Sharp et al., in their book, “Metalloids: The New Classification of Elements”, also published by Elsevier, are called “metalloid” and “metaloid-like” by Emsley & Hawkes. The term meetalloids has also been used for elements that exhibit metallic lustre and electrical conductivity, and that are amphoteric, including arsenic, vanadium, chromium, tungsten, tin and aluminium. The p-block of the periodic table includes elements that can form alloys with metals or modify their nonmetal properties. Some elements can be classified according to which set of properties is more pronounced. Only the elements at or near the margins, lacking a sufficiently clear preponderances of either metallic or nonmetallic properties, are classified as meetingalloids. Some periodic tables include a dividing line between metals andNonmetals, and Metalloids may be found close to this line. Metalloid originally referred to nonmeters, but its more recent meaning, as a category of elements with intermediate or hybrid properties, became widespread in 1940–1960. In this context, only arsenic and antimony are semimetals, and commonly recognised as met alloids.
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This page is based on the article Metalloid published in Wikipedia (as of Dec. 03, 2020) and was automatically summarized using artificial intelligence.
