Table 5
Species included in thermochemical calculations.
| Element | Standard | Gases | Condensates |
|---|---|---|---|
| abundance | |||
| (×10−6) | |||
| H | 106 | H2 (*), H, H2O(*), CH4 (*), … | |
| He | 83 950 | He(*) | |
| C(a) | 295 | CH4 (*), CO(*), CO2 (*), HCN(*) | |
| N(a) | 70.8 | NH3 (*), N2, HCN(*) | NH3, NH4SH, NH4Cl |
| O(a) | 537 | H2O(*), CO(*), CO2 (*), SiO | H2O, Mg2SiO4, MgSiO3, SiO2, Al2O3, Cr2O3 |
| Ne | 141 | Ne | |
| Na | 1.26 | Na(*), NaCl | Na2S |
| Mg | 33.1 | Mg | Mg2SiO4, MgSiO3 |
| Al | 2.63 | Al | Al2O3 |
| Si | 32.4 | SiO, SiH4 | Mg2SiO4, MgSiO3, SiO2 |
| P | 0.269 | PH3 (*), PH2, PO, P2 | H3PO4 (b) |
| S | 14.1 | H2S(*) | NH4SH, Na2S, MnS, ZnS |
| Cl | 0.17 | HCl, NaCl, KCl | NH4Cl, KCl |
| Ar | 3.16 | Ar | |
| K | 0.117 | K(*), KCl | KCl |
| Ca | 1.86 | Ca | CaTiO3 |
| Ti | 0.0794 | Ti, TiO(*), TiO2 | TiN, CaTiO3 |
| V | 0.00891 | V, VO(*), VO2 | VO, CaTiO3 (c) |
| Cr | 0.427 | Cr | Cr, Cr2O3 |
| Mn | 0.295 | Mn | MnS |
| Fe | 28.2 | Fe, FeH(*) | Fe |
| Ni | 1.58 | Ni | Fe(d) |
| Zn | 0.0407 | Zn | ZnS |
| Kr | 0.00166 | Kr | |
| Xe | 0.00018 | Xe |
Notes. Elements are classed by increasing atomic number. Elements not displayed are not taken into account. Aside from H, are mentioned only the species affecting the element equilibrium (i.e. TiO, VO and PO do not affect the abundance of O). (a) Non-equilibrium chemistry based on a comparison of chemical time constants with vertical mixing time from Zahnle & Marley (2014). (b) Only at equilibrium. (c) Dissolution of VO into CaTiO3, assuming an ideal solid solution and Henri’s law. (d)Formation of Fe–Ni alloys. (*)Species for which lines and/or CIA are taken into account.
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