How Many Neutrons Does Magnesium Have?

Author: Staff Writers


Magnesium has 12 neutrons.

How to Find the Number of Neutrons 

To find the number of neutrons for any element, find the element on the periodic table of elements to get its atomic number and atomic mass. The atomic number is equal to the number of protons. Atomic mass minus the number of protons is equal to the number of neutrons. The atomic number for magnesium is equal to 12 and the atomic mass is equal to 24, so to find the number of neutrons subtract 12 from 24 to get 12.

Magnesium Uses in Industry 

In industry, magnesium is used in pyrotechnics and incendiary devises. Magnesium was once used to in photographic flash powders. Magnesium alloys are frequently used to strengthen weld joints. Because magnesium alloys are lighter than aluminum, they are frequently found in aircraft, automobile, and missile construction.

Pharmalogical and Horticultural Uses for Magnesium 

Pharmacological uses for magnesium include magnesium hydroxide, used in milk of magnesia. Magnesium sulphate, or Epsom salts, can be used both medicinally and in horticultural. Sprinkled around the base of plants, such as tomatoes, Epsom salts provide magnesium directly to root system and aid in proper growth and development. Magnesium is essential to life as we know it, and is present in all tissues of the body were it is responsible for energy transfer.


Works Cited

The Physics Van
"Ask the Van - Illinois Dept. of Physics"

"The Scattering of Neutrons by Magnesium"

Expert Opinion 


"The element magnesium is symbolized by Mg. The atom is presented as 24/12Mg and is called Magnesium-24. Because the atom has 12 protons, it must also have 12 electrons. The mass number gives the total number of protons and neutrons, which means that this atom has 12 neutrons (24-12=12)."

Source:Zumdahl, Steven S., and Donald J. DeCoste. Introductory Chemistry .
7th ed. Belmont, CA: Brooks/Cole, Cengage Learning, 2010. Print.


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"How Many Neutrons Does Magnesium Have?." Sophisticated Edge. N.p., n.d. Web. . <>.  

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