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List of chemical elements. 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [ 1]
The periodic table is a tabular arrangement of the chemical elements, organized by their atomic number, electron configuration, and chemical properties. It is a useful tool for understanding the patterns and trends of the elements and their interactions. Learn more about the history, structure, and significance of the periodic table on Wikipedia.
From Latin fluor meaning "a flowing", from mineral name fluorspar (calcium fluoride). Fluorspar was used to make iron flowing in smelting. Neon (Ne) 10 νέος (neos) Greek "new" From Greek νέος (neos), meaning "new". Sodium (Na) 11 soda: English From the English "soda", used in names for sodium compounds such as caustic soda, soda ash ...
English Possible confusion aa, āā, ĀĀ ana of each AAA apply to affected area abdominal aortic aneurysm: a.c. ante cibum: before meals a.c.h.s., ac&hs ante cibum et hora somni: before meals and at bedtime a.d. auris dextra: right ear a single-storey a can be mistaken as an o which could read "o.d.", meaning right eye ad., add. adde addatur: add
Cadmium. hexagonal close-packed (hcp) ( hP2) Cadmium is a chemical element; it has symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting ...
A number of other elements are named after classical words for various places. Ruthenium is from the Latin name for the region including Belarus, Ukraine, and Russia. [29] Lutetium is named after Lutetia, the Latin name for Paris. Copper's name comes from an Old English word derived from the Latin name for the island of Cyprus. [30]
Product key. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters. This sequence is typically entered by the user during the installation of computer ...
e. A chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions. The basic particle that constitutes a chemical element is the atom. Elements are identified by the number of protons in their nucleus, [ 1] known as the element's atomic number. [ 2] For example, oxygen has an atomic number of 8 ...