NATURAL MINERALS OF ALKALI METALS, PHYSICAL AND CHEMICAL PROPERTIES

Аннотация

This article studies the natural minerals of the elements belonging to the alkali metal group, as well as their physical and chemical properties. Alkali metals are characterized by their high reactivity, softness and low density. The article analyzes minerals containing alkali metals such as lithium, sodium, potassium, their industrial importance, as well as chemical reactions and physical parameters. This study is aimed at developing a deeper understanding ofalkali metals and developing theireffective use Keywords •Alkalimetals •Natural minerals •Lithium •Sodium •Potassium •Physical properties •Chemical reactivity •Hydrolysis Introduction: Alkali metals are elements of group I of the periodic table of chemical elements, located after hydrogen and characterized by high reactivity. Their natural minerals and properties play an important role in the chemical, industrial, and energy sectors. This article provides general information about the natural minerals of alkali metals, as well as their physical and chemical properties. Natural minerals ofalkali metals Alkali metals include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), andfrancium (Fr). Theirnatural minerals include: • Lithium minerals: Spodumene (LiAl(SiO₃)₂), lepidolite (K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂), amblygonite. page2272 INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE ISSN:2692-5206,ImpactFactor:12,23 AmericanAcademicpublishers,volume05,issue06,2025 Journal: https://www.academicpublishers.org/journals/index.php/ijai • Sodium minerals: Sodium chloride (NaCl, salt), sodium sulfate (Na₂SO₄), sodium carbonate (Na₂CO₃). •Potassiumminerals: Kalitalkallite(KAlSi₃O₈),sylvinite(KCl), carnallite(KMgCl₃·6H₂O). •RubidiumandCesium minerals: Very rare, sometimes found in polluxiteand lepidolite. •Francium: Very rare and not found innatural form. Physical properties ofalkali metals •Metallicappearance: Alkali metals have ashiny silvery metallicappearance. • Lightness: These metals are among the lightest metals, with low densities (e.g., lithium has a densityof 0.53g/cm³). •Softness:Alkali metals are very soft, and can becut witha knife. • Sharp temperatures: Their melting and boiling points are low, indicating that their atomic bondsare relatively weak. •Electrical and thermal conductivity: Highly conductiveof electricity andheat. Chemical Properties ofAlkali Metals •Reactivity: Alkali metals are very reactive and react rapidly with oxygen and water. • Hydrogenation: They release hydrogen gas when reacted with water and form hydroxides such as: 2Na+2H2O→2NaOH+H2↑2Na + 2H_2O \rightarrow 2NaOH + H_2 \uparrow2Na+2H2O→2NaOH+H2↑ •Reaction with acids: They react rapidly with acids and form thecorresponding alkaline salts. • Chemical activity: Reactivity decreases from top to bottom in the table (from lithium to francium). • Bonding properties: They usually have a +1 valence state, and are widely used as bonding metals. Summary Alkali metals are characterized by their high reactivity, lightness, and softness. Their natural minerals are mainly found in nature and are important raw materials for industry. Their physical and chemical properties allow them to be widely used in the chemical industry, especially in the preparation of hydroxide and alkaline solutions. The study of these metals and theireffective useis importantinthedevelopment ofnew technologies in thefuture.