| 单词 | alkali metal |
| 释义 | alkali metal (once / 153498 pages) n WORD FAMILY alkali metal: alkali metals USAGE EXAMPLESChemists in the Czech Republic and Germany captured images of the alkali metals sodium and potassium exploding on contact with water. BBC(Jan 26, 2015) Sodium is one of the alkali metals, a group of famously reactive elements. Science Magazine(Jan 26, 2015) He explains that the careful packaging is necessary because caesium is an alkali metal, from the first column of the periodic table. BBC(Oct 03, 2014) n any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium) the hydroxides of the alkali metals are strongly alkaline Syn|Hyper alkaline metal metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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