BERYLLIUM or Glucinum symbol Be atomic weight 9.1 one of the metallic chemical elements included in the same sub-group of the periodic classification as magnesium. It was prepared in the form of its oxide in 1798 by L. N. Vauquelin Ann. de chimie 1798 xxvi. p. 155 from the mineral beryl and though somewhat rare is found in many minerals.It was first obtained in an impure condition.
Beryllium has a melting point of 1285 C 2345 F a boiling point of 2500 C 4532 F and a density of 1.848 gcm 3. Its most common oxidation state is 2. It has a high heat adsorption capacity and is nonmagnetic and corrosion-resistant. Beryllium is one of the most toxic elements in the Periodic Table.
Beryllium. Encyclopedias. 1911 Encyclopedia Britannica. Beryllium. or Glucinum symbol Be atomic weight 9.1 one of the metallic chemical elements included in the same sub-group of the periodic classification as magnesium. It was prepared in the form of its oxide in 1798 by L. N. Vauquelin Ann. de chimie 1798 xxvi. p. 155 from the.
Beryllium chloride is a white to green solid with a sharp odor. USCG 1999 CAMEO Chemicals. Beryllium dichloride is a compound of beryllium 2 oxidation state and chloride in the ratio 12. It has a role as a carcinogenic agent and a genotoxin. It is a beryllium molecular entity and an inorganic chloride.
The following article is from The Great Soviet Encyclopedia 1979. It might be outdated or ideologically biased. Beryllium Be a chemical element of Group II of Mendeleevs periodic system. Its atomic number is 4; its atomic mass is 9.01218. It is a light metal of lightgray color and it has one stable isotope 9Be. Beryllium was discovered in 1798.
Beryllium Physical and Chemical Properties. 1. Department of Mining Metallurgical and Materials Engineering Laval University Quebec City Canada. Beryllium is the first member of the alkaline earths but its chemical properties are more similar to aluminum – a property described as diagonal similarities Fig. 1 as discussed below.
Beryllium has good thermal conductivity. The melting temperature of beryllium is 2349 C and has a high boiling point of 2469 C. Chemical Characteristics. Beryllium is a reactive metal. It has strong polarization and a high ionization potential. The compounds of beryllium are quite stable and it mostly forms covalent bonds with its compounds.
They include beryllium magnesium calcium strontium barium and radium. Elements in the same column of the periodic table have similar chemical properties. The periodic table is a chart that shows how the chemical elements are related to each other. Beryllium was discovered by French chemist Louis-Nicolas Vauquelin 1763-1829 in 1798.
Beryllium is the chemical element with the symbol Be and atomic number 4. Because any beryllium synthesized in stars is short-lived it is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in minerals.
Other articles where Beryllium carbide is discussed carbide Ionic carbides The best-characterized methanides are probably beryllium carbide Be2C and aluminum carbide Al4C3. Beryllium oxide BeO and carbon react at 2000 C 3600 F to produce the brick-red beryllium carbide whereas pale yellow aluminum carbide is prepared from aluminum and carbon in a furnace.
Aug 29 2019 Dynamic reference electrode for investigation of fluoride melts containing beryllium difluoride Add time08292019 Sourcesciencedirect.com Existing designs of reference electrodes for potentiometric measurements in fluoride melts do not meet basic requirements of the long exposure corrosion tests to be performed.
Beryllium-copper alloy is used in tools because it does not make sparks. At standard temperature and pressure beryllium resists oxidation when exposed to oxygen. Beryllium is best known for the chemical compounds it forms. Beryllium combines with aluminium silicon and oxygen to make a mineral called beryl.
Beryllium definition is - a chemical element of the alkaline earth metal group with atomic number 4 that occurs naturally in minerals such as beryl and is steel-gray in color light and strong but brittle and is used chiefly as a hardening agent in alloys.
3.6 Chemical Properties Basic beryllium acetate is the best known of the beryllium salts of organic acids which can be divided into normal beryllium carboxylates BeRCOO2 and beryllium oxide carboxylates Be4ORCOO6. The basic acetate is soluble in glacial acetic acid and can readily be crystallized therefrom in very pure form.
Beryllium chemical symbol Be atomic number 4 ranks among the lightest of all known metals.Steel-gray in color it is strong but brittle.It is classified as an alkaline earth metal along with calcium and magnesium.Precious forms of its mineral beryl are aquamarine and emerald.This metal its alloys and compounds are toxic and need to be handled with care.
Beryllium has a melting point of 1285 C 2345 F a boiling point of 2500 C 4532 F and a density of 1.848 gcm 3. Its most common oxidation state is 2. It has a high heat adsorption capacity and is nonmagnetic and corrosion-resistant. Beryllium is one of the most toxic elements in the Periodic Table.
Beryllium Be From Wikipedia the free encyclopedia Beryllium is a chemical element with symbol Be and atomic number 4.
Beryllium ores Mining Encyclopedia . Beryllium chemical element that is the lightest member of the alkaline-earth metals of Group 2 of the periodic table. It is used in metallurgy as a hardening agent and in many outer space and nuclear applications.
B.P. Sharma in Encyclopedia of Materials Science and Technology 2001 3.2 Beryllium and Beryllium Oxide. Beryllium BeO is extracted from beryl ore 3BeO.Al 2 O 3.6SiO 2 through a series of hydro-metallurgical steps.Two extraction processes the sulfate process and the fluoride process are mainly used. These processes yield BeOH 2 which is thermally decomposed to BeO.
Beryllium and its salts are toxic substances and potentially carcinogenic.Chronic berylliosis is a pulmonary and systemic granulomatous disease caused by exposure to beryllium.
The element beryllium is a grey metal that is stronger than steel and lighter than aluminum. Its physical properties of great strength-to-weight high melting point excellent thermal stability and conductivity reflectivity and transparency to X-rays make it an essential material in the aerospace telecommunications information technology defense medical and nuclear industries.