Alkali metals are a group of chemical elements located in Group 1 of the periodic table. The group includes the following elements:
- Lithium (Li)
- Sodium (Na)
- Potassium (K)
- Rubidium (Rb)
- Cesium (Cs)
- Francium (Fr) - Francium is extremely rare and highly radioactive.
These elements are known as alkali metals because they have similar chemical properties and react with water to form alkaline (basic) solutions. Alkali metals are highly reactive and are typically found in nature as compounds rather than pure elements.
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Characteristics of alkali metals include:
Soft and Silvery: Alkali metals are soft and have a shiny, silvery appearance.
Low Density: They have low densities compared to other metals.
Low Melting and Boiling Points: Alkali metals have relatively low melting and boiling points.
Highly Reactive: They are highly reactive and readily combine with other elements, especially halogens, to form salts.
Good Conductors: Alkali metals are good conductors of heat and electricity.
Form Oxides: When exposed to air, alkali metals react with oxygen to form oxides, which can give them a tarnished appearance.
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Because of their high reactivity, alkali metals are typically stored in oil or other non-reactive environments such as argon, to prevent them from reacting with moisture or air. They are essential in various industrial and scientific applications, including the manufacturing of batteries, glass, soaps, and other chemicals.
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I hope this helped!
~~~Harsha~~~