Wikijunior:The Elements/Strontium

Shows the position of Strontium on the periodic chart
Strontium's symbol on the Periodic Table

Strontium is the chemical element with symbol Sr and atomic number 38. It reacts with other elements very easily.


What does it look, feel, taste, or smell like?


strontium is a soft silver-white yellowish metallic element that is highly chemically reactive.

How was it discovered?


Strontium was found by Adair Crawford in 1790 in a mine near Strontian, Scotland. At that time, scientists thought strontium and barium were the same element.

Where did its name come from?


Strontium is named after the Scottish village of Strontian, where it was discovered in the ores of the lead mines.

Did You Know?

  • Strontium has silvery white color, and it turns into yellow when exposed to air
  • It is softer than calcium and harder than barium.
  • Primary use for strontium was in glass for colour television cathode-ray tubes, where it prevented X-ray emission.

Where is it found?


It is found naturally on Earth and is mined.

What are its uses?


Strontium salts are used in fireworks and flares for a red color. Strontium chloride is an ingredient in toothpaste for sensitive teeth.

Is it dangerous?


It is not dangerous to health. Strontium can't harm humans but if you inhale it while it's in the chemical form, it can be very harmful for you.