Element 11
Sodium (Na), atomic number 11, is a soft, silvery-white metal that belongs to the alkali metal group in the periodic table. It’s highly reactive, especially with water, producing hydrogen gas and heat, often leading to explosions in large amounts. Sodium is essential for human health, playing a key role in maintaining fluid balance and nerve function. It’s widely used in table salt (NaCl), industrial applications, and streetlights due to its bright yellow emission.
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