a soft malleable ductile metallic element of the alkaline-earth group occurring only in combination and used especially in color TV tubes, in crimson fireworks, and in the production of some ferrites
strontium is a chemical element with the symbol Sr and atomic number 38. an alkaline earth metal, strontium is a soft silver white yellowish metallic element that is highly chemical reactive the metal forms a dark oxide layer which when it is exposed to air
