Magnesium is an element.The Atomic number is 12 and atomic weight is 24.31. The
symbol is Mg .It is a silvery-white alkaline-earth metal. Magnesium is the eighth in the
Earth's crust abundant element, accounting for 2% of the mass, is the ninth multi-element
in the universe.
Properties:
Magnesium is the periodic table of elements IIA( alkaline earth metal ) . With silver-white
luster, slightly scalability. Magnesium's density, ionization tendency larger.In air,
magnesium's surface produces a thin oxide film, so air is difficult to react with it .
Invention:
1808, British chemist David (H. Davy) use the melt electrolysis system got magnesium .
1828, A French scientists got the pure molten magnesium by potassium metal reduction
of anhydrous magnesium chloride.
Origin of the name:
From the Greek, refers to a mineral dolomite (ie, magnesium oxide).
Use:
Magnesium is the third uses a wide range of structural materials, second only to iron and
aluminum. The main purpose of magnesium are: manufacture of aluminum . Magnesium
metal can be used to heat molten salt reduction method to Preparation of rare metals.
Magnesium lighter than aluminum, it contain 5% -30% of the aluminum-magnesium alloy
light weight, good mechanical properties. Also it widely used in aviation, aerospace use.
And it can be used to make many pure metal reductant. It can be used for flash, suction
devices, fireworks, flares etc.
Impact on the human body:
Magnesium constitute the main component of bone, is an essential mineral elements. It
can aid the absorption of calcium and potassium. It has to prevent heart disease, diabetes,
nocturia, lower cholesterol.