Sodium

Sodium /ˈsdiəm/ is a chemical element with symbol Na (from Ancient Greek Νάτριο) and atomic number 11. It is a soft, silver-white, highly reactive metal. In the Periodic table it is in column 1 (alkali metals), and shares with the other six elements in that column that it has a single electron in its outer shell, which it readily donates, creating a positively charged atom - a cation. Its only stable isotope is 23Na. The free metal does not occur in nature, but instead must be prepared from its compounds. Sodium is the sixth most abundant element in the Earth's crust, and exists in numerous minerals such as feldspars, sodalite and rock salt (NaCl). Many salts of sodium are highly water-soluble: sodium ions have been leached by the action of water from the earth's minerals over eons, so that sodium (and chlorine) are the most common dissolved elements by weight in the oceans.

Sodium was first isolated by Humphry Davy in 1807 by the electrolysis of sodium hydroxide. Many sodium compounds are useful, such as sodium hydroxide (lye) for soap-making and sodium chloride for use as a de-icing agent and a nutrient (edible salt).

Sodium (PlayStation Home)

Sodium was a massively multiplayer online game that was based in and exclusive to the PlayStation 3's online community-based social gaming network PlayStation Home. Sodium was a planned four-part series of games, only two of which were released by the time of Home's closure. It was developed by Outso, a developing company that developed spaces and content for Home, and it was published by Lockwood Publishing, who had published other content for Home. The first part, Sodium One, was released on December 17, 2009 to the European and North American versions of Home. It was later released in the Japanese and Asian versions on June 17, 2010 and July 29, 2010 respectively. The second part, Sodium 2: Project Velocity, was released on June 16, 2011 to the European and North American versions of Home.

Due to the nature of Home, the game continued to grow and expand as Home did. New games, virtual items, and community events were continually added until November 2014 when new content ceased to be published for Home, and Home closed on March 31, 2015.

Sodium (horse)

Sodium (19631983) was an Irish-bred, British-trained Thoroughbred racehorse and sire best known for winning the classic St Leger Stakes in 1966. After running well without winning in 1965 he improved to become one of the best European colts of his generation in 1966 when he developed a rivalry with Charlottown. Sodium finished fourth behind Charlottown in the Epsom Derby but reversed the form to win both the Irish Derby and St Leger. He failed to reproduce his best form as a four-year-old and was retired to stud, where he had little success as a sire of winners in France and Japan.

Background

Sodium was a bay horse bred by the Kilcarn Stud near Navan in County Meath, Ireland. He was from the first crop of foals sired by Psidium the 66/1 winner of the 1961 Epsom Derby. Sodium's dam Gambade showed no ability as a racehorse, but came from a successful family, being a full sister to the 1953 Oaks winner Ambiguity. As a yearling Sodium was offered for sale and bought for 3,500 guineas by the veteran British trainer George Todd on behalf the Indian textile importer Radha Sigtia. Todd trained the colt at Manton in Wiltshire.

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