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n. A soft, silvery, easily oxidized metallic element that ignites spontaneously in air when finely divided. Strontium is used in pyrotechnic compounds and various alloys. Atomic number 38; atomic weight 87.62; melting point 769°C; boiling point 1,384°C; specific gravity 2.54; valence 2. See Table at element.

n. A metallic chemical element (symbol Sr) with an atomic number of 38.

n. A metallic element of the calcium group, always naturally occurring combined, as in the minerals strontianite, celestite, etc. It is isolated as a yellowish metal, somewhat malleable but harder than calcium. It is chiefly employed (as in the nitrate) to color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3.

n. Chemical symbol, Sr; atomic weight, 87.37; specific gravity, 2.54. A dark-yellow metal, less lustrous than barium, malleable, and fusible at a red heat.

n. a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite

"But the water may contain other harmful substances, such as beta-ray emitting strontium, which is known for causing bone cancers."

metallic element    metal   

celestite   

strontium 90   

cesium    niobium    barium    thallium    manganese    magnesium    lithium    vanadium    bismuth    perchlorate