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Updated: Sep 11, 2025

Laboratory Simulation of an IronII-rich Precambrian Marine Upwelling System to Explore the Growth of Photosynthetic Bacteria
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Published on: July 24, 2016

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亚弧地幔自新生态时期的氧化事件以来一直氧化

Chun-Tao Liu1, Chen-Yang Ye2, Qun-Ke Xia2

  • 1Research Center for Earth and Planetary Material Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China. c.-t.liu@zju.edu.cn.

Nature communications
|August 18, 2025
PubMed
概括

自80亿年前以来,亚弧地幔已经被氧化,影响了地球的环境. 这种氧化很可能是海洋地的压缩造成的,而不是新新生态时期的氧化事件.

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Oxidation Numbers03:14

Oxidation Numbers

In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
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A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
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Properties of Transition Metals

Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
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