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发布日期:2021年11月29日

芭乐app下载破解版污 芭乐app下载破解版污 ,国产富二代浏览器入口 国产富二代浏览器入口

Cesium (Australian English: caesium) (atomic symbol Cs) is element 55 on the periodic table. It is in the alkali metals family and is therefore extremely reactive with water, similarly to sodium and potassium but to a greater extent. It is lustrous in appearance, with a slight yellow/golden tint, and melts at 28˚C (82˚F) meaning that it is almost liquid at room temperature. It forms +1 cations as do all alkali metals.

590px-Cesium ampoule in acrylic cube.jpg

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