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网页strontium (Sr), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is used as an ingredient in red signal flares and phosphors and is the principal health hazard in radioactive fallout. atomic number 38 atomic weight 87.62 melting point 769 °C (1,416 °F) boiling point 1,384 °C (2,523 °F) specific gravity 2.63 oxidation …
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网页Strontium-90, a radioactive isotope, is a by-product of nuclear reactors and present in nuclear fallout. It has a half-life of 28 years. It is absorbed by bone tissue instead of calcium and can destroy bone marrow and cause cancer. However, it is also useful as it is one of the best high-energy beta-emitters known.
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Properties of Strontium. It has an atomic number of 38, an atomic mass of 88, one oxidation state (+2) and four naturally occurring isotopes ( 84 Sr, 86 Sr, 87 Sr, 88 Sr), of which 88 Sr is the most abundant at 82.6% of the total mass. Strontium is most similar chemically to the heavier alkali earth elements, Calcium, and Barium.
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网页锶（Strontium）是一种化学元素,元素符号是Sr,被发现于1791-1792年间,英国化学家、医生荷普研究矿石时,肯定其中含有一种新土,从它的产地Strontian命名它为strontia（锶土）。锶是一种银白色带黄色光泽的碱土金属。是碱土金属中丰度小的元素,仅次于铍。
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网页Strontium | Sr | CID 5359327 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. National Institutes of Health. National Library of Medicine. National Center for Biotechnology Information. PubChem ...
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网页Strontium is a mineral found in seawater and soil. In your diet, you get it mainly from seafood, but you can also get small amounts of it in whole milk, wheat bran, meat, poultry, and root ...
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网页Strontium：化学元素Strontium ：黑客组织 百度首页 网页 新闻 贴吧 知道 网盘 图片 视频 地图 文库 百科 进入词条 全站搜索 帮助 清除历史记录 关闭 近期有不法分子冒充百度百科官方人员,以删除词条为由威胁并敲诈相关企业。在此严正声明：百度百科是 ...
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Strontium is a soft, silvery metal with a number of uses: It blocks X-rays emitted by TV picture tubes; it causes paint to glow in the dark; and it is responsible for the brilliant reds in fireworks.
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网页Chemical element, Strontium, information from authoritative sources. Look up properties, history, uses, and more. National Institutes of Health. National Library of Medicine. National Center for Biotechnology Information. PubChem. About. Posts. Submit. Contact. Search PubChem. Apologies, we are having some trouble retrieving data from our ...
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Overview. Strontium is a silvery metal found naturally as a non-radioactive element. About 99% of the strontium in the human body is concentrated in the bones. Several different forms of strontium ...
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