Input interpretation
rubidium cation | ion class
Result
alkali metal ions | biomolecule ions | cations | group 1 ions | s block ions
Ionic radii
| 2-coordinate | 4-coordinate alkali metal ions | | 99 pm (median) 59 pm (lithium cation) (lowest) 137 pm (potassium cation) (highest) biomolecule ions | 57.5 pm (median) 46 pm (copper(I) cation) (lowest) 69 pm (mercury(II) cation) (highest) | 60 pm (median) 26 pm (chromium(VI) cation) (lowest) 137 pm (potassium cation) (highest) cations | 57.5 pm (median) 46 pm (copper(I) cation) (lowest) 69 pm (mercury(II) cation) (highest) | 61.5 pm (median) 39 pm (aluminum cation) (lowest) 137 pm (potassium cation) (highest) group 1 ions | | 99 pm (median) 59 pm (lithium cation) (lowest) 137 pm (potassium cation) (highest) s block ions | | 59 pm (median) 27 pm (beryllium cation) (lowest) 137 pm (potassium cation) (highest) | 5-coordinate | 6-coordinate alkali metal ions | | 145 pm (median) 76 pm (lithium cation) (lowest) 180 pm (francium cation) (highest) biomolecule ions | 49.5 pm (median) 48 pm (aluminum cation) (lowest) 51 pm (tungsten(VI) cation) (highest) | 84.5 pm (median) 44 pm (chromium(VI) cation) (lowest) 220 pm (iodide anion) (highest) cations | 48 pm (median) 48 pm (aluminum cation) (lowest) 48 pm (aluminum cation) (highest) | 73 pm (median) 54 pm (aluminum cation) (lowest) 138 pm (potassium cation) (highest) group 1 ions | | 145 pm (median) 76 pm (lithium cation) (lowest) 180 pm (francium cation) (highest) s block ions | | 110 pm (median) 45 pm (beryllium cation) (lowest) 167 pm (cesium cation) (highest) | 8-coordinate | 9-coordinate | 10-coordinate alkali metal ions | 151 pm (median) 92 pm (lithium cation) (lowest) 174 pm (cesium cation) (highest) | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 173.5 pm (median) 166 pm (rubidium cation) (lowest) 181 pm (cesium cation) (highest) biomolecule ions | 113 pm (median) 78 pm (iron(III) cation) (lowest) 174 pm (cesium cation) (highest) | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 153 pm (median) 123 pm (calcium cation) (lowest) 181 pm (cesium cation) (highest) cations | 112 pm (median) 78 pm (iron(III) cation) (lowest) 151 pm (potassium cation) (highest) | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 131.5 pm (median) 123 pm (calcium cation) (lowest) 140 pm (lead(II) cation) (highest) group 1 ions | 151 pm (median) 92 pm (lithium cation) (lowest) 174 pm (cesium cation) (highest) | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 173.5 pm (median) 166 pm (rubidium cation) (lowest) 181 pm (cesium cation) (highest) s block ions | 134 pm (median) 89 pm (magnesium cation) (lowest) 174 pm (cesium cation) (highest) | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 151 pm (median) 123 pm (calcium cation) (lowest) 181 pm (cesium cation) (highest) | 12-coordinate | thermochemical radius alkali metal ions | 168 pm (median) 139 pm (sodium cation) (lowest) 188 pm (cesium cation) (highest) | 172 pm (median) 172 pm (francium cation) (lowest) 172 pm (francium cation) (highest) biomolecule ions | 161 pm (median) 131 pm (cadmium cation) (lowest) 188 pm (cesium cation) (highest) | 191 pm (median) 133 pm (hydroxide anion) (lowest) 258 pm (sulfate anion) (highest) cations | 144 pm (median) 134 pm (calcium cation) (lowest) 164 pm (potassium cation) (highest) | 137 pm (median) 137 pm (ammonium cation) (lowest) 137 pm (ammonium cation) (highest) group 1 ions | 168 pm (median) 139 pm (sodium cation) (lowest) 188 pm (cesium cation) (highest) | 172 pm (median) 172 pm (francium cation) (lowest) 172 pm (francium cation) (highest) s block ions | 162.5 pm (median) 134 pm (calcium cation) (lowest) 188 pm (cesium cation) (highest) |