![alkali metals on periodic table alkali metals on periodic table](https://media.cheggcdn.com/study/2da/2da987df-427f-4c89-b8be-63d7754184d6/image.png)
The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Essentially, the heavier the alkaline earth metal, the more vigorously it will react with water. alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. All of the alkaline earth metals except beryllium and magnesium also react with water to produce hydrogen gas and their respective hydroxides (magnesium will react with steam, however). The periodic table, also known as the periodic table of the (chemical). As a result, they are not found in nature in their elemental state.Īll but one of the alkaline earth metals react with the halogens ( chlorine, fluorine etc.) to form ionic compounds (beryllium chloride is the exception, because the bonding is covalent). The main difference between alkali metals and alkaline earth metals is the number of electrons in their outermost shells of atoms and subsequently their position in the periodic table. Metallic bonds in the alkaline earth metals are thus stronger than for the alkali metals, resulting in higher melting points, but they are still quite reactive because the two outer electrons are easily lost. The alkaline earth metals make up group 2 of the periodic table, from. Hydrogen is group 1 but exhibits few characteristics of a metal and is often categorized with the nonmetals.
![alkali metals on periodic table alkali metals on periodic table](https://thumbs.slideserve.com/1_3739560.jpg)
They have very similar behavior and characteristics. The term "earth" is historical it was the generic name used by alchemists for the oxides of these elements (which at one time were thought to be elements in their own right).Īll of the elements of group two have two electrons in their outer shell. The alkali metals make up group 1 of the Table, and comprise Li through Fr.
![alkali metals on periodic table alkali metals on periodic table](https://revisionscience.com/sites/revisionscience.com/files/imce/group1.png)
Cesium, lithium, potassium, sodium, rubidium, sodium. Like the alkali metals, they form alkaline solutions when they react with water. Materials in this group are the elements in the Group IA of the periodic table and their alloys. The elements in this group, which are all shiny and silvery-white in appearance, are known as the alkaline earth metals. Group two of the periodic table comprises the elements beryllium, magnesium, calcium, strontium, barium and radium. The alkali metals (highlighted) occupy group one in the periodic table