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Name: Magnesium
Symbol: Mg
Number of Energy Levels: 3
Electrons on the outer energy level: 2
Atomic number: 12
Atomic Mass: 23.305 Amu (Atomic Mass Units)
Protons/Electrons: 12
Neutrons: 12
Density: 1.738 g/cm3
Classification: Alkaline Earth

Magnesium | Chemical elements

Magnesium was discovered in 1808 by Sir Humphrey Davy and it is mainly obtained from sea water. It takes its name from the Greek word Magnesia which is a district of Thessaly.

Top 19 interesting facts about Magnesium

  1. Magnesium is the eighth most abundant element in the Earth crust (the forth in the Earth as a whole) and the ninth in the universe.
  2. Magnesium represents 13% of the Earth mass.
  3. Magnesium can be found in large quantities in the Earth’s mantle.
  4. Magnesium is the eleventh most abundant element by mass in human body.
  5. Magnesium is a strong metal, very light-weight, and highly flammable.
  6. Magnesium density is just two thirds of the density of Aluminum.
  7. Magnesium is soluble in water so it can be found in large quantities in seawater.
  8. Magnesium reacts with water but slower than Calcium.
  9. Like Sodium, Magnesium is produced in stars.
  10. The elemental Magnesium is very reactive and it is not found naturally on Earth but in compounds.
  11. Magnesium is used to produce aluminum-magnesium alloys because these are light and strong.
  12. In medicine, Magnesium is used in laxatives production (but not only).
  13. Magnesium ions are very important for all living cells.
  14. Magnesium is used in fertilizers since it is part of chlorophyll.
  15. Magnesium was used in World War Two in incendiary weapons.
  16. Fireworks production uses Magnesium because of the brilliant white light it produces.
  17. Magnesium was used in the early days of photography as a source of light.
  18. Magnesium has three stable isotopes and all three are found on Earth in large quantities.
  19. China is the most important producer of Magnesium in the world; 80% of the world’s Magnesium is produced in China.

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