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Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is 23 Na. The free metal does not occur in nature and must be prepared from compounds.
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
Sodium chloride / ˌ s oʊ d i ə m ˈ k l ɔːr aɪ d /, [8] commonly known as edible salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chlorine ions. It is transparent or translucent, brittle, hygroscopic , and occurs as the mineral halite .
The molar mass of a substance depends not only on its molecular formula, but also on the distribution of isotopes of each chemical element present in it. For example, the molar mass of calcium-40 is 39.962 590 98 (22) g/mol, whereas the molar mass of calcium-42 is 41.958 618 01 (27) g/mol, and of calcium with the normal isotopic mix is 40.078(4 ...
Molar mass: 65.0099 g/mol Appearance Colorless to white solid Odor: Odorless Density: ... Sodium azide is an inorganic compound with the formula NaN 3.
Molar mass: 158.11 g/mol (anhydrous) 248.18 g/mol (pentahydrate) ... Sodium thiosulfate (sodium thiosulphate) is an inorganic compound with the formula Na 2 S 2 O 3 ...
Molar mass: 84.9947 g/mol Appearance White powder or colorless crystals Odor: sweet Density: ... Sodium nitrate is the chemical compound with the formula Na N O 3.
Molar mass: 102.894 g·mol −1 Appearance White powder, hygroscopic: Density: 3.21 g/cm 3 (anhydrous) ... Sodium bromide is an inorganic compound with the formula Na Br.