alkali metals, metals found in Group 1 of the periodic table. Compared to other metals they are soft and have low melting points and densities. Alkali metals are powerful reducing agents and form univalent compounds. All react violently with water,
Alkali metals TheelementsinGroup1ofthePeriodicTablearecalledtheALKALIMETALS(碱金属Themost碱金属).碱金属commonalkalimetalsarelithium(Li),sodium(Na)andpotassium(K).Positionofthealkalimetals Appearance Lithium,sodiumandpotassiumareallsoftmetalsthatareeasilycutwithascalpel（解剖刀）orknife.Thefreshlycutsurfaceisa...
The heat resulting from the reaction ignites the hydrogen atoms produced, causing a considerable explosion[8]. Periodic Trends of Alkaline Metals The lower down Group 1 on the periodic table you move, the following trends are apparent in the alkali metals: ...
The alkali metals are the six metallic elements in Group 1 of the periodic table, namely Li, Na, K, Rb, Cs, and Fr. The first five exist in nature, whereas Fr is only produced through nuclear reaction. The alkali metal ions generally have smaller atomic radii than the transition metal ...
Location of the Alkali Metals on the Periodic Table The alkali metals are the elements located in Group IA of theperiodic table. The alkali metals are lithium, sodium, potassium, rubidium, cesium, and francium. Alkali Metal Properties The alkali metals exhibit many of the physical properties comm...
alkali metals是什么意思 n. 碱金属; alkali metals英英释义 名词alkali metal: any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium) alkali metals 例句 1.All the alkali metals have a single s - electron outside a clos...
Chemical Properties of Alkali Metals Alkali metals are theleast electronegative(most electropositive) elements in the periodic table due to a presence of asingle valence electronthat is donated very easily. This allows them to readily react with many nonmetals; in fact, they are the most reactive...
碱金属-Alkali-Metals KS4Chemistry AlkaliMetals 1of32 ©BoardworksLtd2005 Contents AlkaliMetals Electronstructureandreactivity PhysicalpropertiesReactions UsesSummaryactivities 2of32 ©BoardworksLtd2005 Group1–thealkalimetals Alkalimetalsareingroup1oftheperiodictable,ontheleft.1 HLiBeNaMgOfthesealkalimetals,...
Alkali metal, any of the six elements of Group 1 (Ia) of the periodic table—lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizin
alkali metal- 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" alkaline metal metal,metallic element- any of several chemical elements that are usually ...