CHON is a mnemonic acronym for the four most common elements in living organisms: carbon, hydrogen, oxygen, and nitrogen.

The acronym CHNOPS, which stands for carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur, represents the six most important chemical elements whose covalent combinations make up most biological molecules on Earth.[1] Most of the elements are nonmetals. Sulfur is contained in the amino acids cysteine and methionine.[2] Phosphorus is contained in phospholipids, a class of lipids that are a major component of all cell membranes, as they can form lipid bilayers, which keep ions, proteins, and other molecules where they are needed for cell function, and prevent them from diffusing into areas where they should not be. Phosphate groups are also an essential component of the backbone of nucleic acids and are required to form ATP – the main molecule used as energy powering the cell in all living creatures.[3]

Carbonaceous asteroids are rich in CHON elements.[4] These asteroids are the most common type, and frequently collide with Earth as meteorites. Such collisions were especially common early in Earth's history, and these impactors may have been crucial in the formation of the planet's oceans.[5]

The simplest compounds to contain all of the CHON elements are fulminic acid and isocyanic acid (the latter of which is much more stable), having one of each atom.

The relative atomic diameters of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur

See also


  1. ^ The acronym "S.P. Cohn" was also used in high school biology classes to represent the six chemical elements. Education (2010). "CHNOPS: The Six Most Abundant Elements of Life". Pearson Education. Pearson BioCoach. Retrieved 2010-12-10. Most biological molecules are made from covalent combinations of six important elements, whose chemical symbols are CHNOPS. ... Although more than 25 types of elements can be found in biomolecules, six elements are most common. These are called the CHNOPS elements; the letters stand for the chemical abbreviations of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
  2. ^ Brosnan JT, Brosnan ME (June 2006). "The sulfur-containing amino acids: an overview". The Journal of Nutrition. 136 (6 Suppl): 1636S–1640S. PMID 16702333.
  3. ^ Campbell, Neil A.; Brad Williamson; Robin J. Heyden (2006). Biology: Exploring Life. Boston, Massachusetts: Pearson Prentice Hall. ISBN 0-13-250882-6.
  4. ^ Water vs. Rocks: Resources for Earth or for Exploration? Archived 17 October 2012 at the Wayback Machine SSI-TV video archive, recorded on 30 October 2010, 66:07, four talks and Q&A given during Session 2: Extraterrestrial Prospecting of the Space Studies Institute’s Space Manufacturing 14 conference in California. Prof. Michael A'Hearn (University of Maryland) @ 7:10 in the video. The video also includes Brad Blair, Space Studies Institute, and Prof. Leslie Gertsch, University of Missouri-Rolla: Mining Concepts Development for Accessing Asteroid Resources; Mark Sonter, Asteroid Enterprises Pty Ltd Resources: Asteroids: What We Can Expect From What We Know Now; Dr. Faith Vilas, University of Arizona, Department of Astronomy and Steward Observatory, accessed 2011-01-07.
  5. ^ Morbidelli, A.; et al. (November 2000), "Source regions and time scales for the delivery of water to Earth", Meteoritics & Planetary Science, 35 (6): 1309–1320, Bibcode:2000M&PS...35.1309M, doi:10.1111/j.1945-5100.2000.tb01518.x

External links

Battle of Tong Le Chon

The Battle of Tong Le Chon took place from 25 March 1973 to 12 April 1974 when North Vietnamese forces lay siege to and finally captured the Vietnamese Rangers' Tong Le Chon camp.


CHON-FM is a Canadian radio station, owned by Northern Native Broadcasting, Yukon which broadcasts at 98.1 FM in Whitehorse, Yukon. A community radio station with a variety of music and information programs for the First Nations population, the radio station serves much of the Yukon, as well as several border communities in British Columbia and the Northwest Territories, through a series of rebroadcasters.

The station was licensed in 1984 to broadcast at 88.9 FM in Whitehorse and moved to its current 98.1 FM frequency in 1986.

Cho Ki-chon

Cho Ki-chon (Korean: 조기천; 6 November 1913 – 31 July 1951) was a Russian-born North Korean poet. He is regarded as a "founding father of North Korean poetry" whose distinct Soviet-influenced style of lyrical epic poetry in the socialist realist genre became an important feature of North Korean literature. He was nicknamed "Korea's Mayakovsky" after the writer whose works had had an influence on him and which implied his breaking from the literature of the old society and his commitment to communist values. Since a remark made by Kim Jong-il on his 2001 visit to Russia, North Korean media has referred to Cho as the "Pushkin of Korea".Cho was dispatched by the Soviet authorities to liberated Korea when the Red Army entered in 1945. By that time, he had substantial experience with Soviet literature and literature administration. The Soviets hoped that Cho would shape the cultural institutions of the new state based on the Soviet model. For the Soviets, the move was successful and Cho did not only that but also significantly developed socialist realism as it would become the driving force of North Korean literature and arts.Cho offered some of the earliest contributions to Kim Il-sung's cult of personality. His most famous work is Mt. Paektu (1947), a lyrical epic praising Kim Il-sung's guerrilla activities and promoting him as a suitable leader for the new North Korean state. Other notable works by Cho include "Whistle", a seemingly non-political love poem which was later adapted as a popular song that is known in both North and South Korea.

During the Korean War, Cho wrote wartime propaganda poems. He died during the war in an American bombing raid. He and his works are still renowned in North Korean society.

Chon Buri railway station

Chon Buri railway station is a railway station located Ban Suan Sub-district, Chonburi City, Chonburi. It is a class 1 railway station 107.795 km (67.0 mi) from Bangkok railway station. The station opened in July 1989 as part of the Eastern Line Chachoengsao Junction-Sattahip Port section.

Chonburi (city)

Chonburi (Thai: ชลบุรี, RTGS: Chon Buri, [tɕ͡ʰōn bū.rīː] (listen)) is the capital of Chonburi Province and Mueang Chonburi District in Thailand. It is about 100 km south-east of Bangkok, on the coast of the Gulf of Thailand. The name means "city of water". Chonburi, along with other areas along the coast to Pattaya, forms a conurbation known as the Pattaya-Chonburi Metropolitan Area.

Chonburi has had town (thesaban mueang) status since 1935.

Chonburi F.C.

Chonburi Football Club (Thai: สโมสรฟุตบอลชลบุรี) is a Thai professional football club based in the city of Chonburi, Chonburi Province and playing in the top division in Thai football, the Thai League 1. The team lifted the league title in 2007 which became the most successful season in their history.Chonburi were founded in 1997 and their main rivals are Sriracha who are also based in Chonburi Province. The team is widely known by their nickname The Sharks which can be seen in the club logo.

Chonburi Province

Chonburi (Thai: ชลบุรี, RTGS: Chon Buri, [tɕ͡ʰōn bū.rīː] (listen)) is an eastern province (changwat) of Thailand. Neighboring provinces are (from north clockwise) Chachoengsao, Chanthaburi, and Rayong. To the west is the Gulf of Thailand. Chonburi is home to Thailand's largest tourist-oriented city, Pattaya (also spelled Phatthaya). It is home to Thailand's largest and primary seaport. Due to these factors, the province's population is growing rapidly, with currently some 1.7 million residents (albeit with a large floating or unregistered population). The registered population as of 31 December 2012 was 1.36 million.


The chonmage (Japanese: 丁髷) is a form of Japanese traditional topknot haircut worn by men. It is most commonly associated with the Edo period and samurai, and in recent times with sumo wrestlers. It was originally a method of using hair to hold a samurai helmet steady atop the head in battle, and became a status symbol among Japanese society.

A traditional Edo-era chonmage featured a shaved pate. The remaining hair, which was long, was oiled and tied into a small queue which was folded onto the top of the head in the characteristic topknot.

Chun Doo-hwan

Chun Doo-hwan (Korean pronunciation: [tɕʌn.du.ɦwan] or [tɕʌn] [tu.ɦwan]; born 18 January 1931) is a South Korean politician and former South Korean army general who served as the President of South Korea from 1980 to 1988, ruling as an unelected coup leader from December 1979 to September 1980 and as elected president from 1980 to 1988. Chun was sentenced to death in 1996 for his role in the Gwangju Massacre but was later pardoned by President Kim Young-sam, with the advice of then President-elect Kim Dae-jung, whom Chun's administration had sentenced to death some 20 years earlier.

Chơn Thành District

Chơn Thành is a rural district of Bình Phước Province, in the region of Vietnam. As of 2003 the district had a population of 59,856. The district covers an area of 415 km². The district capital lies at Chơn Thành.The stream Ông Thành was location of the Battle of Ông Thành in the Vietnam War.

Heaven Lake

Heaven Lake (Korean: 천지, Ch'ŏnji or Cheonji; Chinese: 天池, Tiānchí; Manchu: Tamun omo or Tamun juce) is a crater lake on the border between China and North Korea. It lies within a caldera atop the volcanic Paektu Mountain, a part of the Baekdudaegan mountain range and the Changbai mountain range. It is located partly in Ryanggang Province, North Korea, at 42.006°N 128.057°E / 42.006; 128.057, and partly in Jilin Province, northeastern China.

Justin Chon

Justin Jitae Chon (born May 29, 1981) is an American actor, director, and YouTube personality. He is best known for portraying Eric Yorkie in The Twilight Saga film series, for his critically acclaimed 2017 film Gook, and for being a member of the K-pop parody group Boys Generally Asian.Justin Chon trained for over two years in the Meisner technique at the Baron Brown Studio In Santa Monica and guest starred in the Studio web series Joanne Brown Is Here with Hana Mae Lee and Joanne Baron.

Korean won

The won (; Korean: 원(圓), Korean pronunciation: [wʌn]) was the currency of Korea between 1902 and 1910. It was subdivided into 100 jeon (; Korean: 전(錢), Korean pronunciation: [tɕʌn]).

North Korean won

The won (; Korean: 원, Korean pronunciation: [wʌn]; symbol: ₩; code: KPW) or Korean People's won is the official currency of North Korea. It is subdivided into 100 chon. The won is issued by the Central Bank of the Democratic People's Republic of Korea, based in the capital city, Pyongyang.

Ri Kwang-chon

Ri Kwang-Chon (born 4 September 1985) is a North Korean international football player.

He played an integral part of the North Korea team that qualified for the 2010 FIFA World Cup in South Africa.

Savages (2012 film)

Savages is a 2012 American crime thriller film directed by Oliver Stone. It is based on Don Winslow's novel of the same name. The screenplay was written by Shane Salerno, Stone, and Winslow. The film was released on July 6, 2012 to mixed reviews, and stars Taylor Kitsch, Blake Lively, Aaron Taylor-Johnson, Demián Bichir, Benicio del Toro, Salma Hayek, John Travolta and Emile Hirsch.

USS Rogers (DD-876)

USS Rogers (DD-876) was a Gearing-class destroyer of the United States Navy. She was named for three brothers — Jack Ellis Rogers Jr., Charles Ethbert Rogers, and Edward Keith Rogers — killed in action board USS New Orleans during the Battle of Tassafaronga in the Solomon Islands on 30 November 1942.

Rogers's keel was laid down on 3 June 1944 by Consolidated Steel Corporation at Orange, Texas. The ship was launched on 20 November 1944, sponsored by the Mother, Mrs. Josie Viola Taylor Rogers, wife of Jack Ellis Rogers, Sr., and commissioned on 26 March 1945, Comdr. C. B. Smiley in command.

Yu In-chon

Yu In-chon (born March 20, 1951 - ) is a South Korean actor and the current Minister of Ministry of Culture and Tourism. Yu In-chon was born in the city of Jeonju, North Jeolla Province, South Korea in 1951. He graduated with the bacheolor degree in theater and film from Chung-Ang University. Although Yu started his career as a TV actor, his fondness of play led him to found You Theater in the Gangnam area of Seoul, 1999.

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