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Difference between Magnesium and Magnesium Oxide

Difference between Magnesium and Magnesium Oxide

Magnesium and magnesium oxide are two different forms of this essential mineral. While they share some similarities, there are also key differences between the two. In this article, we’ll take a look at the key differences between magnesium and magnesium oxide, as well as their benefits and uses.

What is Magnesium?

Magnesium is a metallic element that is found in abundance in the Earth’s crust. It has a wide range of uses, from structural applications to manufacturing. Magnesium is also an essential element for human health. It is involved in over 300 biochemical reactions in the body and is essential for proper metabolism, cell growth, and nervous system function.

Magnesium deficiency is relatively common and can lead to a number of health problems, including muscle cramps, fatigue, anxiety, and high blood pressure. Magnesium supplements are often used to treat these conditions. Magnesium is also available in many foods, including dark leafy greens, nuts, and seeds.

What is Magnesium Oxide?

Magnesium oxide, or MgO, is a white powder that is derived from the mineral magnesium. It has a wide range of applications, including use as a construction material, an abrasive, and a food additive.

  • Magnesium oxide is also used as a medication to treat heartburn and indigestion. Magnesium oxide can be created by heating magnesium metal in the presence of oxygen.
  • The resulting product is a highly stable compound that does not readily react with other chemicals. Magnesium oxide has a high melting point and is resistant to fire, making it an ideal material for use in construction.
  • Magnesium oxide is also used in products such as paints, fertilizers, and toothpaste. When taken orally, magnesium oxide can help to relieve heartburn and indigestion by neutralizing stomach acid. Magnesium oxide is safe for most people to take, but side effects may include nausea and diarrhea.

Difference between Magnesium and Magnesium Oxide

Magnesium and Magnesium oxide are both inorganic compounds. Magnesium is metal while Magnesium oxide is an ionic compound consisting of Magnesium and oxygen atoms. Magnesium is found in the second group of the periodic table while Magnesium oxide is found in the fourth group.

  • Magnesium has a greater electronegativity than oxygen, meaning that Magnesium would be expected to form a cation (Mg2+) while oxygen would be expected to form an anion (O2-).
  • The Magnesium oxide molecule consists of one Magnesium atom and one oxygen atom held together by ionic bonds. Magnesium has lower ionization energy than oxygen, meaning that it is easier to remove an electron from a Magnesium atom than from an oxygen atom.
  • As a result, Magnesium forms a cation while oxygen forms an anion when they react. The Magnesium oxide molecule is held together by ionic bonds between the magnesium cation and the oxygen anion.


Magnesium oxide is a great form of magnesium for people who have trouble digesting food, but it’s not the best option for everyone. If you are looking to increase your magnesium levels, talk to your doctor about taking a supplement that contains magnesium oxide.

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