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oxidation state

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noun Chemistry.
  1. the state of an element or ion in a compound with regard to the electrons gained or lost by the element or ion in the reaction that formed the compound, expressed as a positive or negative number indicating the ionic charge of the element or ion.
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Origin of oxidation state

First recorded in 1945–50
Also called oxidation number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
oxidation number in Science

oxidation state

  1. See valence.
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