Magnesium (pronounced /mæ??ni?zi?m/ ) is a chemical element with the symbol Mg , atomic number 12, atomic weight 24.3050 and common oxidation number +2.

Magnesium, an alkaline earth metal is the ninth most abundant element in the universe by mass. mehr

Magnesium (pronounced /mæ??ni?zi?m/ ) is a chemical element with the symbol Mg , atomic number 12, atomic weight 24.3050 and common oxidation number +2.

Magnesium, an alkaline earth metal is the ninth most abundant element in the universe by mass. [ 1 ] The commonness of magnesium is related to the fact that it is easily built up in supernova stars from a sequential addition of three helium nuclei to carbon (which in turn is made from a single reaction between three helium nuclei at once). Magnesium constitutes about 2% of the Earth 's crust by mass, which makes it the eighth most abundant element in the crust. [ 2 ] Magnesium ion's high solubility in water helps ensure that it is the third most abundant element dissolved in seawater . [ 3 ] less