alkali metal, alkaline metal(noun)
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"
Any of the soft, light, reactive metals of Group 1 of the periodic table; lithium, sodium, potassium, rubidium, cesium, and francium.
The alkali metals are a group in the periodic table consisting of the chemical elements lithium, sodium, potassium, rubidium, caesium, and francium. This group lies in the s-block of the periodic table as all alkali metals have their outermost electron in an s-orbital. The alkali metals provide the best example of group trends in properties in the periodic table, with elements exhibiting well-characterized homologous behaviour. The alkali metals have very similar properties: they are all shiny, soft, highly reactive metals at standard temperature and pressure and readily lose their outermost electron to form cations with charge +1. They can all be cut easily with a knife due to their softness, exposing a shiny surface that tarnishes rapidly in air due to oxidation. Because of their high reactivity, they must be stored under oil to prevent reaction with air, and are found naturally only in salts and never as the free element. In the modern IUPAC nomenclature, the alkali metals comprise the group 1 elements, excluding hydrogen, which is nominally a group 1 element but not normally considered to be an alkali metal as it rarely exhibits behaviour comparable to that of the alkali metals. All the alkali metals react with water, with the heavier alkali metals reacting more vigorously than the lighter ones.
The numerical value of alkali metal in Chaldean Numerology is: 1
The numerical value of alkali metal in Pythagorean Numerology is: 7
Images & Illustrations of alkali metal
Translations for alkali metal
From our Multilingual Translation Dictionary
Get even more translations for alkali metal »
Find a translation for the alkali metal definition in other languages:
Select another language:
Discuss these alkali metal definitions with the community:
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Use the citation below to add this definition to your bibliography:
"alkali metal." Definitions.net. STANDS4 LLC, 2017. Web. 21 Oct. 2017. <http://www.definitions.net/definition/alkali metal>.