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| # | Species | Formula |
| 6310 | Cs(+)(H2O)3.Br (Geo) | H6O3BrCs | |
| 6311 | Cesium iodide | ICs | |
| 6312 | Cesium iodide (Geo) | ICs | |
| 6313 | Cesium iodide, anion | ICs | |
| 6314 | Cs(+)(H2O)3.I | H6O3ICs | |
| 6315 | Cs(+)(H2O)3.I (Geo) | H6O3ICs | |
| 6316 | Cesium, dimer | Cs2 | |
| 6317 | Cesium, dimer (Geo) | Cs2 | |
| 6318 | Cesium, dimer, anion | Cs2 | |
| 6319 | Cesium oxide (Cs2O) | OCs2 | |
| 6320 | Cesium hydroxide dimer | H2O2Cs2 | |
| 6321 | Cs2O2 (ELOKOF)a (Geo) | C12H10O2Cs2 | |
| 6322 | Cs2O2 (ELOKOF)a | C12H10O2Cs2 | |
| 6323 | Cesium fluoride, dimer (Geo) | F2Cs2 | |
| 6324 | Cesium sulfate | O4SCs2 | |
| 6325 | Cs2SO4 (Geo) | O4SCs2 | |
| 6326 | Cs2S4 (JUPQIU) (Geo) | C16H14S4Cs2 | |
| 6327 | Cesium chloride, dimer | Cl2Cs2 | |
| 6328 | Cesium chloride, dimer (Geo) | Cl2Cs2 | |
| 6329 | Cesium bromide, dimer | Br2Cs2 | |
| 6330 | Cesium bromide, dimer (Geo) | Br2Cs2 | |
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