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| # | Species | Formula |
| 2 | Hydrogen, atom | H | |
| 3 | Hydrogen (Geo) | H2 | |
| 4 | Hydrogen | H2 | |
| 5 | Helium, atom | He | |
| 6 | Lithium, cation | Li | |
| 7 | Lithium, 2P(u) 2s(0) 2p(1) | Li | |
| 8 | Lithium, atom | Li | |
| 9 | Lithium hydride (Geo) | HLi | |
| 10 | Lithium hydride | HLi | |
| 11 | Helium lithium cation (Geo) | HeLi | |
| 12 | Lithium, dimer (Geo) | Li2 | |
| 13 | Lithium dimer | Li2 | |
| 14 | Beryllium, atom | Be | |
| 15 | Beryllium hydride, cation (Geo) | HBe | |
| 16 | Beryllium hydride, cation | HBe | |
| 17 | Beryllium hydride (Geo) | HBe | |
| 18 | Beryllium hydride | HBe | |
| 19 | Beryllium dihydride | H2Be | |
| 20 | LiBeH (Geo) | HLiBe | |
| 21 | Lithium beryllium hydride | HLiBe | |
| 22 | Beryllium, dimer | Be2 | |
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