![]() ![]() Here is how the equation looks for a reaction between calcium and water:Īll the six Group 2 elements react with oxygen to form oxides, though not as readily as the Group 1 elements. The alkaline metals react with water at room temperature to produce hydroxides that are almost insoluble in water, along with hydrogen ions to form a basic solution. īeryllium (Be) does not react with water due to its small atomic size and relatively high ionization energy. Since all the alkaline metals have only two valence electrons, it takes little energy to make them give up those electrons to form cations (2+), resulting in high reactivity. ![]() The lower the ionization energy, the more reactive an element is. The energy required to make an atom give up the electrons in its outermost shell (valence electrons) is the ionization energy for the element. Why are the Alkaline Earth Metals so Reactive They all react with halogens and form halide compounds.The Group 2 elements usually form electrovalent or ionic bonds in reactions with other elements (again, Be is an exception as it forms covalent bonds).When in contact with water, they all react strongly to form alkaline hydroxides (Beryllium is an exception as it does not react with water).All the alkaline earth metals are highly reactive, though not as much as the alkali metals.Common Properties and Characteristics of Alkaline Earth Metals Physical Properties Additionally, they are found in the earth’s crust and are not affected by fire or heat. The alkaline metals are named as such because when mixed with water, they produce solutions with pH higher than 7, and ‘basic’ or ‘alkaline’ properties. ![]()
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