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White phosphorus, yellow phosphorus, or simply tetraphosphorus (P 4) is an allotrope of phosphorus.It is a translucent waxy solid that quickly yellows in light (due to its photochemical conversion into red phosphorus), [2] and impure white phosphorus is for this reason called yellow phosphorus.
Pages in category "High school sports conferences and leagues in the United States" The following 200 pages are in this category, out of approximately 253 total. This list may not reflect recent changes .
The following is a list of high school athletic conferences in Wisconsin.All of the following are overseen by the Wisconsin Interscholastic Athletic Association (WIAA). The listed district for each conference is designated by WIAA, who divided the state into seven portions: District 1 is Northwest, District 2 is Northeast, District 3 is West Central, District 4 is East Central, District 5 is ...
The National High School Hall of Fame is a program of the National Federation of State High School Associations that honors individuals who have made outstanding contributions to high school sports or performing arts. Since 1986, the Hall of Fame enshrinement ceremony has been the final event of the National Federation's annual summer meeting ...
It would appear that violet phosphorus is a polymer of high relative molecular mass, which on heating breaks down into P 2 molecules. On cooling, these would normally dimerize to give P 4 molecules (i.e. white phosphorus) but, in a vacuum , they link up again to form the polymeric violet allotrope.
PIAA's older logo PIAA's current logo. The PIAA was founded in Pittsburgh on December 29, 1913. It is charged with serving its member schools and registered officials by establishing policies and adopting contest rules that emphasize the educational values of interscholastic athletics, promote safe and sportsmanlike competition, and provide uniform standards for all interscholastic levels of ...
It also provides the licensing program for more than 10,000 officials in the state, and oversees junior high or middle school athletics in about 100 of the state's nearly 400 school districts. Among its duties are the administration of state tournament series in its various sports, overseeing eligibility and conference alignment, and promoting ...
The Washington Interscholastic Activities Association (WIAA) is the governing body of athletics and activities for secondary education schools in the state of Washington.As of October 2024, the private, 501(c)(3) nonprofit organization consists of nearly 800 member high schools and middle/junior high schools, both public and private.