| Sr | strontium |
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| Sr2+ | Strontium |
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| strontium radioisotopes | Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes. (12 Dec 1998) |
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| strontium | <chemistry> 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 colour pyrotechnic flames red. Symbol Sr. Atomic weight 87.3. Origin: NL. See Strontia. Source: Websters Dictionary (01 Mar 1998) |
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| strontium-85 | A radioactive strontium isotope with a half-life of 64.84 days; used in bone imaging. (05 Mar 2000) |
| strontium-87m | A radioactive strontium isotope with a half-life of 2.80 hours; used in bone imaging. (05 Mar 2000) |
| strontium-89 | A radioactive strontium isotope; a beta emitter with half-life of 50.52 days; used as a tracer in studies of strontium absorption by the body, strontium incorporation in bone, etc. (05 Mar 2000) |
| strontium-90 | A radioactive strontium isotope; a beta emitter with half-life of 29.1 years; a major component (about 5%) of the uranium fission products; it is incorporated into bone tissue where turnover is slow; used in the therapy of certain eye conditions (e.g., pterygia, traumatic corneal ulceration, etc.). (05 Mar 2000) |
| strontium isotopes | Stable strontium atoms that have the same atomic number as the element strontium, but differ in the atomic weight. Sr-84, 86, 87, and 88 are the stable strontium isotopes. (12 Dec 1998) |
| barium radioisotopes | Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights 126-129, 131, 133, and 139-143 are radioactive barium isotopes. (12 Dec 1998) |
| bromine radioisotopes | Unstable isotopes of bromine that decay or disintegrate emitting radiation. Br atoms with atomic weights 74-78, 80, and 82-90 are radioactive bromine isotopes. (12 Dec 1998) |
| cadmium radioisotopes | Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes. (12 Dec 1998) |
| calcium radioisotopes | Unstable isotopes of calcium that decay or disintegrate emitting radiation. Ca atoms with atomic weights 39, 41, 45, 47, 49, and 50 are radioactive calcium isotopes. (12 Dec 1998) |
| carbon radioisotopes | Unstable isotopes of carbon that decay or disintegrate emitting radiation. C atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes. (12 Dec 1998) |
| gallium radioisotopes | Unstable isotopes of gallium that decay or disintegrate emitting radiation. Ga atoms with atomic weights 63-68, 70 and 72-76 are radioactive gallium isotopes. (12 Dec 1998) |
| radioisotopes | Isotopes that exhibit radioactivity and undergo radioactive decay. (12 Dec 1998) |
| cerium radioisotopes | Unstable isotopes of cerium that decay or disintegrate emitting radiation. Ce atoms with atomic weights 132-135, 137, 139, and 141-148 are radioactive cerium isotopes. (12 Dec 1998) |
| gold radioisotopes | Unstable isotopes of gold that decay or disintegrate emitting radiation. Au 185-196, 198-201, and 203 are radioactive gold isotopes. (12 Dec 1998) |
Synonyms : Radioisotopes, Strontium
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