| 单词 | alkali metal |
| 释义 | alkali metal noun[C] chemistryspecializeduk/ˌæl.kəl.aɪ ˈmet.əl/us/ˌæl.kəl.aɪ ˈmet̬.əl/any of agroupofsoft,whitemetalsthat arechemicalelementsandreacteasilywith othersubstances 碱金属Chemistry: types of chemical
You can also find related words, phrases, and synonyms in the topics: Chemical elements alkali metal| American Dictionaryalkali metal noun[C] us/ˈæl·kəˌlɑɪ ˌmetəl/chemistry any of agroupofsoft,whitemetals that arechemicalelementsandreacteasilywith othersubstances Examplesofalkali metalalkali metal These sources work by applying a layer ofalkalimetalatoms on a low work function substrate, usually tungsten. From theCambridge English Corpus The technique coats a tungsten plug with aluminosilicate doped with analkalimetal, which is then sintered onto the tungsten. From theCambridge English Corpus Thesealkalimetalheat pipes transferred heat from the heat source to a thermionic or thermoelectric converter to generate electricity. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.From this acid otheralkalimetalsalts can be prepared. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Saltiness and sourness are perceived whenalkalimetalor hydrogen ions enter taste buds, respectively. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.As a hydride of analkalimetal, it is reactive towards even weak oxidizing agents. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Thealkalimetalperoxides and superoxides are powerful oxidizing agents. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This natural radioactivity became a basis for a mistaken claim of the discovery for element 87 (the nextalkalimetalafter caesium) in 1925. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Hence, the largeralkalimetalatoms (further down the group) will be less electronegative as the bonding pair is less strongly attracted towards them. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.All of thealkalimetalfluorides, and most of the alkali earth metal fluorides are true salts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Whenalkalimetalcyanides are used, at least partial neutralization of the reaction medium is usually necessary to provide desired products. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The number of states of rare gas halides is greater than that ofalkalimetalsalts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The radius increases sharply between the noble gas at the end of each period and thealkalimetalat the beginning of the next period. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Thealkalimetalmagnetometer is very expensive to use but it is very sensitive and has fast cycles when it is used. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Inducing n-type doping within the silicene structure requires analkalimetaldopant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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