Sesquioxide
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Sesquioxide

A sesquioxide is an oxide containing three atoms of oxygen with two atoms (or radicals) of another element. For example, aluminium oxide (Al2O3) is a sesquioxide. Many sesquioxides contain the metal in the +3 oxidation state and the oxide ion, e.g., Al2O3, La2O3. The alkali metal sesquioxides are exceptions and contain both peroxide, and superoxide, ions, e.g., Rb2O3 is formulated [(Rb+
)
4

2
].[1] Sesquioxides of iron and aluminium are found in soil.

Sesquioxidizing, meaning the creation of a sesquioxide, is the highest scoring word that would fit on a Scrabble board,[2] though it does not actually appear in any official Scrabble dictionary.[3] Though the Oxford English Dictionary already listed the noun and the past participle adjective -- sesquioxidation and sesquioxidized, respectively -- the verb, sesquioxidize, and its conjugated forms, have been absent from the dictionaries used as sources for the official Scrabble word lists. An early appearance of the noted present participle had occurred in the 1860 publication of the State of New York's Legislative Assembly's Transactions of the State Medical Society,[4] yet the word's first appearance in a dictionary was in the 1976 edition of Josepha Heifetz Byrne's Mrs. Byrne's Dictionary of Unusual, Obscure, and Preposterous Words (ISBN 0806504986),[5] One could theoretically score 2044 points in a single move, when otherwise only words from the official Scrabble word list are used.[6]

List of sesquioxides

B2O3
N2O3
Al2O3
P2O3, existing as P4O6
Cl2O3
Sc2O3
Ti2O3
V2O3
Cr2O3
Mn2O3
Fe2O3
Co2O3
Ni2O3
Ga2O3
As2O3
Br2O3
Y2O3
Nb2O3
In2O3
Ir2O3
Pb2O3
Sb2O3
Tb2O3
Eu2O3
Nd2O3
Sm2O3
Pr2O3
Tm2O3
Yb2O3

References

  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. ^ The Scrabble Omnibus, Gyles Brandreth, ISBN 0-00-218081-2
  3. ^ [1], David K. Israel, "Scrabble Word Records", March 22, 2010, accessed March 31, 2018
  4. ^ New York State, Legislature, Assembly (1860). Documents of the Assembly of the State of New York, Eighty-third Session. -- 1860. Volume IV ; No. 111: Transactions of the State Medical Society, p. 19
  5. ^ Keith W. Smith Total scrabble, page 67
  6. ^ Record for the Highest Scoring Scrabble Move at scrabulizer.com, accessed 2008-05-30

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Sesquioxide
 



 



 
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