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The First Group of the periodic table, known as Group "A," includes the alkali metals such as lithium, sodium, and potassium. These elements are characterized by their high reactivity, especially with water, and are known for forming strong alkaline solutions. Alkali metals have distinctive properties, such as low melting points and good electrical conductivity. This group plays a crucial role in various chemical reactions and applications ranging from batteries to medicine. Understanding their properties and uses is essential for studies in chemistry and materials science.
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