Alkali earth metals are a group of elements in the periodic table that have similar chemical and physical properties. The alkali earth metals are found in the second row of the periodic table and include the elements beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
These elements have certain common properties, such as their low electronegativity, high reactivity, and high ionization energy. They are also characterized by having two valence electrons, which makes them highly reactive and prone to forming compounds with other elements.
The alkali earth metals have a wide range of applications in various fields. For example, magnesium is widely used in alloys, and calcium is a key component of many biological materials, such as bones and teeth. Strontium is used in the production of pyrotechnics, while barium is used in the production of oil and gas.
In addition to their practical applications, the alkali earth metals are also important in the study of chemical reactions and the behavior of elements in the periodic table. Understanding the properties and behavior of these elements is an important area of study in chemistry and is fundamental to our understanding of the elements and their role in the universe.