Tuesday, January 28, 2014

The name is derived from the Greek word for a district in Thessaly called Magnesia. Joseph Black fr


Jump to: navigation, search sodium dizzy spells - magnesium - aluminum Be Mg Ca General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2 (IIA), 3, s Density, Hardness 1738 kg / m 3, 2.5 Appearance silvery white Atomic properties Atomic weight 24 305 amu Atomic radius (calc.) 150 (145) pm Covalent radius 130 pm van der Waals radius 173 pm Electron configuration [Ne] 3 s e - s per energy level 2, 8, 2 Oxidation dizzy spells states (Oxide) 2 (strong base) Crystal structure Hexagonal Physical Properties State of matter Solid (paramagnetic) mp 923 K (649.85 C) Boiling point 1363 K (1089.85 C) Molar volume 14:00 10 -6 m 3 / mol Heat of vaporization dizzy spells 127.4 kJ / mol Heat of fusion 8954 kJ / mol Vapour pressure 361 Pa at 923 K speed of sound 4602 m / s at 293.15 K General Electronegativity 1.31 (Pauling scale) Specific heat capacity 1020 J / (kg * K) Electrical conductivity 22.6 10 6 / (m ohms) Thermal conductivity 156 W / (m * K) 1 st ionization potential 737.7 kJ / mol 2nd ionization potential 1450.7 kJ / mole 3rd ionization potential 7732.7 kJ / mol Most stable isotopes iso NA half-life DM M eV VP 24 Mg 78.99 % Mg is stable with 12 neutrons 25% Mg 10 Mg is stable with 13 neutrons 26 Mg 11.01% Mg is stable with 14 neutrons SI units & STP are used except where noted.
Magnesium is a chemical element in the periodic table that has the symbol Mg and atomic number 12. Magnesium is the eighth elements with the largest distribution and occupies about 2% of the Earth's crust and is the third element that most often occurs in solution dizzy spells in seawater. This alkaline earth metal is mainly used as an alloying aluminum to magnesium alloys (alloys) dizzy spells to produce.
Magnesium is a fairly strong, silvery white and light-weight metal (one third lighter than aluminum) that slightly tarnishes when exposed to air is. In a powder, the hot metal and ignite when exposed to air and burns with a white flame. It is difficult to metal in massive form inflamed but is easy when thinly sliced mortars. Once it is ignited, it is difficult to extinguish because in both nitrogen (to form magnesiumnitried) and carbon burns.
Magnesium oxide and other compounds in the agricultural, chemical and construction industries. The element's Main Appropriation as legeringsbymiddel to aluminum which in turn mainly for the manufacture of beverage cans used. Magnesium alloys dizzy spells are also used as structural components of automobiles and machinery. A different use of the metal to assist with the removal of sulfur dizzy spells from iron and steel.
Other uses include: Magnesium, like aluminum, is strong and light, so it is often used for high-grade car wheels, often "power wheels called. Fotogegraveerde plates for the printing industry. Combined alloys of this metal is essential for airplane - and missielkonstruksie . Whenever it as an alloying agent used, promotes the metal mechanical, bewerkbaarheids - and welding characteristics of aluminum. additive to conventional propellants and used to grafietknobbels in cast iron. reducing agent for the production of pure uranium and other metals from their salts. dizzy spells The hydroxide in milk of magnesia, the chloride and sulfate in Epsom salts, and citrates have medicinal uses. burned magnesite is used for refractory purposes such as brick and linings for furnaces and converters. Magnesium is flammable, burning dizzy spells at a temperature of about 2200 C. This high temperature at which magnesium burns are often utilized. Magnesium dizzy spells (Mg CO 3) powder is also athletes like gymnasts and weightlifters use their grip on equipment improvements. Other uses include for flash light in photography, flares and pirotegnieke as well as incendiary.
The name is derived from the Greek word for a district in Thessaly called Magnesia. Joseph Black from England magnesium as an element in 1755, and discerned Sir Humphrey Davey pure magnesium electrolytically isolated in 1808 from a mixture of magnesia and Hg O and Bussy it in a clearly identifiable form prepared in 1831. Magnesium is the eighth most abundant element in the earth's crust. It is an alkaline dizzy spells earth metal, and is therefore not a pure element in nature. It can be found in large deposits of magnesite, dolomite, and other minerals.
It is mainly obtained from the electrolysis of molten magnesium chloride is recovered from brine, springs and seawater. Although magnesium in more than 60 minerals found, only dolomite, magnesite, brucite, carnallite, talc and olivine are of commercial importance.
The required daily intake for adults, which is influenced by several factors including gender, weight and

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