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Citation: Zhang Guoyan, Quan Xinjun. A New Method for Determining the Oxidation Number[J]. Chemistry, ;2020, 83(3): 277-281. shu

A New Method for Determining the Oxidation Number

Zhang Guoyan ,
Quan Xinjun ^,

College of Chemistry, Jilin University, Changchun, 130012

Corresponding author: Quan Xinjun, quanxinjun@sina.com
Received Date: 16 October 2019
Accepted Date: 20 December 2019

Oxidation number is an important property of elements and widely applied in inorganic chemistry. The assignment of oxidation number was traditionally based on a set of rules founded by Ryōichi Kiriyama and Linus Pauling. These rules play important roles in the popularization of oxidation numbers in inorganic chemistry. But these initial rules would not work when dealing the compounds with complicated and unknown structures. According to the definition of oxidation number by IUPAC, a new method for determining the oxidation number based on the oxidation number depending entirely on the electron supply and demand relationship between the bonding two atoms is proposed here. The highest positive oxidation number of an element is limited by the number of electrons in its valence layer, and the lowest negative oxidation number of the element is limited by the difference between the number of electrons around the rare gas element and the number of valence layers in the same period. This method requires no information about molecule structure or initial rules of oxidation number. Furthermore, it is simple with few exceptions and can be used in high school and college chemistry teaching.
- Oxidation number,
- The number of valence electrons,
- The supply-demand relationship of electrons
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