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Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is 23 Na. The free metal does not occur in nature and must be prepared from compounds.
Sodium silicate is a generic name for chemical compounds with the formula Na 2x Si y O 2y+x or (Na 2 O) x · (SiO 2) y, such as sodium metasilicate Na 2 SiO 3, sodium orthosilicate Na 4 SiO 4, and sodium pyrosilicate Na
CN− + −OCl → OCN− + Cl−. Sodium hypochlorite is commonly used as a biocide in industrial applications to control slime and bacteria formation in water systems used at power plants, pulp and paper mills, etc., in solutions typically of 10–15% by weight.
Virginia Gov. Glenn Youngkin issued a new executive order Tuesday that will limit or ban cell phone use in public schools – the latest in a string of efforts by officials to crack down on what ...
Frequency. 1–3% [4] [6] Bipolar disorder, previously known as manic depression, is a mental disorder characterized by periods of depression and periods of abnormally elevated mood that each last from days to weeks. [4] [5] If the elevated mood is severe or associated with psychosis, it is called mania; if it is less severe and does not ...
Andrew Greif. August 3, 2024 at 7:16 PM. Jewel Samad. PARIS — A noise rippled through Stade de France on Saturday evening when, before a semifinal of the women’s 100 meters at the Paris ...
June 17, 2024 at 5:16 PM. WASHINGTON (AP) — President Joe Biden is planning to announce a sweeping new policy Tuesday that would lift the threat of deportation for tens of thousands of people ...
Lithium (from Ancient Greek λίθος (líthos) 'stone') is a chemical element; it has symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid element. Like all alkali metals, lithium is highly reactive and flammable, and must be stored in vacuum ...