Input interpretation
protactinium(III) cation | ion class
Result
actinide ions | cations | f block ions
Ionic radii
| actinide ions | cations | f block ions 2-coordinate ionic radius | 45 pm (median) 45 pm (uranium(VI) cation) (lowest) 45 pm (uranium(VI) cation) (highest) | 57.5 pm (median) 46 pm (copper(I) cation) (lowest) 69 pm (mercury(II) cation) (highest) | 45 pm (median) 45 pm (uranium(VI) cation) (lowest) 45 pm (uranium(VI) cation) (highest) 4-coordinate ionic radius | 52 pm (median) 52 pm (uranium(VI) cation) (lowest) 52 pm (uranium(VI) cation) (highest) | 61.5 pm (median) 39 pm (aluminum cation) (lowest) 137 pm (potassium cation) (highest) | 52 pm (median) 52 pm (uranium(VI) cation) (lowest) 52 pm (uranium(VI) cation) (highest) 5-coordinate ionic radius | | 48 pm (median) 48 pm (aluminum cation) (lowest) 48 pm (aluminum cation) (highest) | 6-coordinate ionic radius | 94.5 pm (median) 73 pm (uranium(VI) cation) (lowest) 112 pm (actinium cation) (highest) | 73 pm (median) 54 pm (aluminum cation) (lowest) 138 pm (potassium cation) (highest) | 94 pm (median) 73 pm (uranium(VI) cation) (lowest) 117 pm (europium(II) cation) (highest) 8-coordinate ionic radius | 105 pm (median) 86 pm (uranium(VI) cation) (lowest) 109 pm (americium(III) cation) (highest) | 112 pm (median) 78 pm (iron(III) cation) (lowest) 151 pm (potassium cation) (highest) | 105 pm (median) 86 pm (uranium(VI) cation) (lowest) 125 pm (europium(II) cation) (highest) 9-coordinate ionic radius | | 124 pm (median) 124 pm (sodium cation) (lowest) 124 pm (sodium cation) (highest) | 110 pm (median) 104 pm (ytterbium(III) cation) (lowest) 116 pm (neodymium(III) cation) (highest) 10-coordinate ionic radius | 113 pm (median) 113 pm (thorium(IV) cation) (lowest) 113 pm (thorium(IV) cation) (highest) | 131.5 pm (median) 123 pm (calcium cation) (lowest) 140 pm (lead(II) cation) (highest) | 125 pm (median) 107 pm (cerium(IV) cation) (lowest) 135 pm (europium(II) cation) (highest) 12-coordinate ionic radius | 121 pm (median) 121 pm (thorium(IV) cation) (lowest) 121 pm (thorium(IV) cation) (highest) | 144 pm (median) 134 pm (calcium cation) (lowest) 164 pm (potassium cation) (highest) | 125.5 pm (median) 114 pm (cerium(IV) cation) (lowest) 136 pm (lanthanum(III) cation) (highest) thermochemical radius | | 137 pm (median) 137 pm (ammonium cation) (lowest) 137 pm (ammonium cation) (highest) |