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Name: Strontium
Symbol: Sr
Number of Energy Levels: 5
Electrons on the outer energy level: 2
Atomic number: 38
Atomic Mass: 87.62 Amu (Atomic Mass Units)
Protons/Electrons: 38
Neutrons: 50
Density: 2.54 g/cm3
Classification: Alkaline Earth

Strontium | Chemical elements

Strontium was discovered in 1790 by Adair Crawford and William Cruickshank. Its name derives from the word "Strotian" which is a Scottish town. Strontium melting point is at 769.0 °C (1042.15 K, 1416.2 °F) and its boiling point is at 1384.0 °C (1657.15 K, 2523.2 °F).

Top 17 interesting facts about Strontium

  1. Strontium is a soft metal.
  2. Strontium is a silver-white or yellowish (when it is exposed to air) very reactive metal.
  3. Strontium is very similar from the chemical and physical point of view with its two neighbors, calcium and barium.
  4. Naturally, it occurs in the minerals such as celestine, putnistine, and strontianite.
  5. Because strontium is highly reactive with oxygen and water, it can’t be find freely in nature.
  6. In order to prevent oxidation, strontium is kept under mineral oil or kerosene.
  7. Strontium is used for production of cathode ray tubes for television sets but the replacement of these displays with modern ones changes the consumption of strontium.
  8. Because of its volatility, strontium is used in pyrotechnics and in the flare production.
  9. Strontium is the 15th most common element on Earth.
  10. China is the biggest producer of strontium (two thirds of the world’s production) followed by Spain, Mexico, Turkey, Argentina, and Iran.
  11. Strontium has 20 isotopes but only four of them are stable: 84-Sr, 86-Sr, 87-Sr, and 88-Sr.
  12. 90-Sr is one of the unstable isotopes of strontium and it is a byproduct of nuclear fusion.
  13. 90-Sr is one of the long-lived high-energy beta emitters known today and it might be use in future as a power source.
  14. 89-Sr is used in cancer treatment.
  15. Strontium chloride is used in tooth paste production.
  16. A magnesium alloy used in car and motorcycle production contains 2% strontium.
  17. The stable forms of strontium don’t have a significant health treat on human body.

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