Si (s) + 2 F2 (g) SiF4 (g)

This is an oxidation-reduction (redox) reaction:

Si0 - 4 e- SiIV (oxidation)

4 F0 + 4 e- 4 F-I (reduction)

Si is a reducing agent, F2 is an oxidizing agent.

Reactants:

  • Si
    • Names: Silicon source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Si source: wikidata, accessed: 2019-09-07, Element 14 source: wikidata, accessed: 2019-09-07
    • Appearance: Steel-grey crystals or black-to-brown amorphous powder source: ICSC, accessed: 2019-09-04; Black to gray, lustrous, needle-like crystals. [Note: The amorphous form is a dark-brown powder.] source: NIOSH NPG, accessed: 2019-09-02
  • F2
    • Names: Fluorine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Fluorine-19 source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Yellow compressed gas with pungent odour source: ICSC, accessed: 2019-09-04; Pale-yellow to greenish gas with a pungent, irritating odor. source: NIOSH NPG, accessed: 2019-09-02

Products:

  • SiF4Tetrafluorosilane source: wikipedia, accessed: 2019-09-28source: ICSC, accessed: 2019-09-04, Silicon tetrafluoride source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Other names: Silicon fluoride source: wikipedia, accessed: 2019-09-28source: ICSC, accessed: 2019-09-04, Fluoro acid air source: wikipedia, accessed: 2019-09-28, Perfluorosilane source: ICSC, accessed: 2019-09-04
    • Appearance: Colourless gas, fumes in moist air source: wikipedia, accessed: 2019-09-28; Colourless gas with pungent odour source: ICSC, accessed: 2019-09-04