O2 (g) + Te (s) TeO2 (s)

This is an oxidation-reduction (redox) reaction:

Te0 - 4 e- TeIV (oxidation)

2 O0 + 4 e- 2 O-II (reduction)

Te is a reducing agent, O2 is an oxidizing agent.


  • O2
    • Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
    • Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04
  • Te
    • Names: Tellurium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Te source: wikidata, accessed: 2019-09-07, Element 52 source: wikidata, accessed: 2019-09-07
    • Appearance: Dark grey-to-brown amorphous powder, with metal characteristics or silvery-white, lustrous crystalline solid source: ICSC, accessed: 2019-09-04; Odorless, dark-gray to brown, amorphous powder or grayish-white, brittle solid. source: NIOSH NPG, accessed: 2019-09-02


  • TeO2
    • Names: Tellurium dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Tellurium(IV) oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27