May atomikong bigat 22.99, punto ng pagkatunaw na 97.8 °C, punto ng pagkulong 892 °C, espesipikong grabidad na 0.971, at V na 1) ay isang elementong metalikong sumasabog kapag hinaluan ng tubig. Kabilang sa katangiang pisikal nito ang pagiging malambok, parang pilak, at napupupukpok. Nagiging asin ito kapag sumanib na sa klorido. Nagagamit ito sa paglikha ng maraming mahahalagang mga kompawnd o kumpuwesto. Natuklasan ito noong 1807 ni Humphry Davy.[8]
↑ 3.03.13.2Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN978-1-62708-155-9.{{cite book}}: CS1 maint: date auto-translated (link)
↑The compound NaCl has been shown in experiments to exists in several unusual stoichiometries under high pressure, including Na3Cl in which contains a layer of sodium(0) atoms; see Zhang, W.; Oganov, A. R.; Goncharov, A. F.; Zhu, Q.; Boulfelfel, S. E.; Lyakhov, A. O.; Stavrou, E.; Somayazulu, M.; Prakapenka, V. B.; Konôpková, Z. (2013). "Unexpected Stable Stoichiometries of Sodium Chlorides". Science (sa wikang Ingles). 342 (6165): 1502–1505. arXiv:1310.7674. Bibcode:2013Sci...342.1502Z. doi:10.1126/science.1244989. PMID24357316. S2CID15298372.{{cite journal}}: CS1 maint: date auto-translated (link)
↑Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN0-8493-0464-4.{{cite book}}: CS1 maint: date auto-translated (link)