![]() ![]() It cannot be maintained in an inert atmosphere and contact with water and other substances with which sodium reacts should be avoided. Sodium metal should be handled with great care. Thirteen isotopes of sodium are recognized. The importance of common salt to animal nutrition has been recognized since prehistoric times.Īmong the many compounds that are of the greatest industrial importance are common salt (NaCl), soda ash (Na 2CO 3), baking soda (NaHCO 3), caustic soda (NaOH), Chile saltpeter (NaNO 3), di- and tri-sodium phosphates, sodium thiosulfate (hypo, Na 2S 2O 3 Soap is generally a sodium salt of certain fatty acids. Sodium compounds are important to the paper, glass, soap, textile, petroleum, chemical, and metal industries. The metal may be used to improve the structure of certain alloys, descale metal, and purify molten metals.Īn alloy of sodium with potassium, NaK, is an important heat transfer agent. Metallic sodium is vital in the manufacture of esters and in the preparation of organic compounds. It normally does not ignite in air at temperatures below 115☌. It may or may not ignite spontaneously on water, depending on the amount of oxide and metal exposed to the water. Decomposition in water results in the evolution of hydrogen and the formation of the hydroxide. Sodium is a soft, bright, silvery metal which floats on water. ![]() ![]() Sodium (Na) symbol chemical element of the periodic table, 3D. Sodium, like every reactive element, is never found free in nature. Browse 40+ sodium element symbol stock videos and clips available to use in your projects, or start a new search to explore more stock footage and b-roll video clips. The most common compound is sodium chloride (table salt), but it occurs in many other minerals, such as soda niter, cryolite, amphibole, zeolite, etc. This method is much cheaper than that of electrolyzing sodium hydroxide, as was used several years ago. It is now obtained commercially by the electrolysis of absolutely dry fused sodium chloride. Sodium is the fourth most abundant element on earth, comprising about 2.6% of the earth's crust it is the most abundant of the alkali group of metals. The D lines of sodium are among the most prominent in the solar spectrum. Sodium is present in fair abundance in the sun and stars. Long recognized in compounds, sodium was first isolated by Davy in 1807 by electrolysis of caustic soda. The orange glow is like the colour of sodium street lighting and the spiked ‘flash’ symbol reflects the elements high reactivity. Sodium is a soft, bright, silvery metal which floats on water.įrom the English word, soda Medieval Latin, sodanum: a headache remedy. The two lines in a circle represents sodium, and is one of the element symbols developed by John Dalton in the 19th century. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |