nátrem

Nátrem is a term that has appeared in historical and linguistic contexts to denote the chemical element sodium. In those contexts, it is considered an older or regional spelling of natrium, the traditional Latin name for the element from which the symbol Na is derived. While modern scientific usage typically favours natrium or sodium, nátrem may be encountered in older Icelandic or Nordic texts and in some transliterations.

Etymology and naming conventions link nátrem to natrium, reflecting the long history of the element’s naming across European languages. The form nátrem is not widely used in current chemical nomenclature, but it appears in certain linguistic sources as a variant or historical reflex.

Chemically, sodium is a soft, silvery-white alkali metal with atomic number 11. It is highly reactive, especially with water, releasing hydrogen gas and forming sodium hydroxide. In its elemental form, sodium is rarely found in nature due to its reactivity; it is typically encountered in compounds such as salts.

Natural occurrence and production center on salts rather than pure metal. Sodium is abundant in the Earth’s crust and in seawater, especially as part of minerals like halite (rock salt). Industrial production commonly involves electrolysis of molten sodium chloride to obtain elemental sodium, which is then used in various chemical processes.

Biologically, sodium ions are essential electrolytes in animals and humans, helping regulate fluid balance, nerve function, and muscle activity. Common compounds include sodium chloride, sodium bicarbonate, and sodium carbonate, each with wide-ranging applications from food to industry.

See also: natrium, sodium, sodium chloride, sodium hydroxide, electrolyte.