- a bivalent, metallic element whose compounds resemble those of calcium, found in nature only in the combined state, as in strontianite: used in fireworks, flares, and tracer bullets. Symbol: Sr; atomic weight: 87.62; atomic number: 38; specific gravity: 2.6.
Origin of strontium
Examples from the Web for strontium
Historical Examples of strontium
Only a few of the compounds of strontium have any commercial applications.An Elementary Study of Chemistry
A salt of potassium produced under144 the same circumstances a violet, strontium, a crimson colour, &c.
Strontium obtained from carbonate of strontia by Sir Humphry Davy.The Evolution of Photography
The red tint has, no doubt, been produced by strontium also.
Mention is here made of the formation of saccharates of barium, strontium, and calcium in low concentrations.
- a soft silvery-white element of the alkaline earth group of metals, occurring chiefly in celestite and strontianite. Its compounds burn with a crimson flame and are used in fireworks. The radioisotope strontium-90, with a half-life of 28.1 years, is used in nuclear power sources and is a hazardous nuclear fall-out product. Symbol: Sr; atomic no: 38; atomic wt: 87.62; valency: 2; relative density: 2.54; melting pt: 769°C; boiling pt: 1384°C
Word Origin for strontium
light metallic element, 1808, coined in Modern Latin by English chemist Sir Humphry Davy (1778-1829) from Strontian, name of a parish in Argyllshire, Scotland, the site of lead mines where strontium was first found.
- A soft, easily oxidized metallic element that ignites spontaneously in air when finely divided, used in pharmaceuticals and in radioisotope form for bone imaging. Atomic number 38.
- A soft, silvery metallic element of the alkaline-earth group that occurs naturally only as a sulfate or carbonate. One of its isotopes is used in the radiometric dating of rocks. Because strontium salts burn with a red flame, they are used to make fireworks and signal flares. Atomic number 38; atomic weight 87.62; melting point 777°C; boiling point 1,382°C; specific gravity 2.54; valence 2. See Periodic Table.