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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.
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The most important sodium compounds are table salt (Na Cl), soda ash (Na 2 CO 3), baking soda (Na HCO 3), caustic soda (NaOH), sodium nitrate (Na NO 3), di- and tri- sodium phosphates, sodium thiosulfate (Na 2 S 2 O 3 ·5H 2 O), and borax (Na 2 B 4 O 7 ·10H 2 O). [7] In compounds, sodium is usually ionically bonded to water and anions and is ...
Numerical values. For each atom, the column marked 1 is the first ionization energy to ionize the neutral atom, the column marked 2 is the second ionization energy to remove a second electron from the +1 ion, the column marked 3 is the third ionization energy to remove a third electron from the +2 ion, and so on.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to ...
Downs cell. Downs' process is an electrochemical method for the commercial preparation of metallic sodium, in which molten NaCl is electrolyzed in a special apparatus called the Downs cell. The Downs cell was invented in 1923 (patented: 1924) by the American chemist James Cloyd Downs (1885–1957). [1][2]
Sodium aluminate – NaAlO 2; Sodium arsenate – H 24 Na 3 AsO 16; Sodium azide – NaN 3; Sodium bicarbonate – NaHCO 3; Sodium biselenide – NaSeH; Sodium bisulfate – NaHSO 4; Sodium bisulfite – NaHSO 3; Sodium borate – Na 2 B 4 O 7; Sodium borohydride – NaBH 4; Sodium bromate – NaBrO 3; Sodium bromide – NaBr; Sodium bromite ...
Sodium channel protein type 5 subunit alpha, also known as Na V 1.5 is an integral membrane protein and tetrodotoxin-resistant voltage-gated sodium channel subunit. Na V 1.5 is found primarily in cardiac muscle , where it mediates the fast influx of Na + -ions (I Na ) across the cell membrane , resulting in the fast depolarization phase of the ...