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| # | Species | Formula |
| 1705 | Sodium, dimer | Na2 | |
| 1706 | Disodium acetylide (Geo) | C2Na2 | |
| 1707 | Sodium cyanide, dimer | C2N2Na2 | |
| 1708 | Disodium oxide | ONa2 | |
| 1709 | Sodium oxide, Na2O (Geo) | ONa2 | |
| 1710 | Sodium hydroxide, dimer | H2O2Na2 | |
| 1711 | Disodium fluoride, cation | FNa2 | |
| 1712 | Sodium fluoride, dimer (Geo) | F2Na2 | |
| 1713 | Sodium fluoride, dimer | F2Na2 | |
| 1714 | Magnesium, dication | Mg | |
| 1715 | Magnesium, cation | Mg | |
| 1716 | Magnesium, 1P(u) 3s(1)3p(1) | Mg | |
| 1717 | Magnesium, atom | Mg | |
| 1718 | Magnesium hydride (MgH) | HMg | |
| 1719 | Magnesium hydride (Geo) | HMg | |
| 1720 | Magnesium hydride (MgH2) | H2Mg | |
| 1721 | Magnesium hydride (Geo) | H2Mg | |
| 1722 | Methyl magnesium hydride | CH4Mg | |
| 1723 | Methyl magnesium hydride (Geo) | CH4Mg | |
| 1724 | MgH(CCH) | C2H2Mg | |
| 1725 | MgH(CCH) (Geo) | C2H2Mg | |
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