| Atom/Ion | r(pm) |
| Ag |
144 |
| Ag+ |
115 |
| Al |
143(140) |
| Al3+ |
53 |
| Ar |
(95) |
| As |
(122) |
| As3+ |
58 |
| Au |
144 |
| Au+ |
137 |
| B |
(90) |
| Ba |
224 |
| Ba2+ |
135 |
| Be |
112(125) |
| Be2+ |
45 |
| Bi |
182 |
| Bi3+ |
103 |
| Br |
114 |
| Br- |
196 |
| C |
(77) |
| Ca |
197 |
| Ca2+ |
100 |
| Cd |
152 |
| Cd2+ |
95 |
| Ce |
182 |
| Atom/Ion | r(pm) |
| Ce3+ |
102 |
| Cl |
(99) |
| Cl- |
184 |
| Co |
125 |
| Co2+ |
70 |
| Co3+ |
60 |
| Cr |
129 |
| Cr3+ |
62 |
| Cs |
272 |
| Cs+ |
167 |
| Cu |
128 |
| Cu+ |
77 |
| Cu2+ |
73 |
| F |
(71) |
| F- |
133 |
| Fe |
126 |
| Fe2+ |
70 |
| Fe3+ |
60 |
| Ga |
153 |
| Ga3+ |
62 |
| Ge |
139(122) |
| H |
(37) |
| He |
(32) |
| Hf |
159 |
| Atom/Ion | r(pm) |
| Hg |
155 |
| Hg2+ |
102 |
| I |
(133) |
| I- |
220 |
| In |
167 |
| In3+ |
80 |
| Ir |
136 |
| Ir3+ |
82 |
| K |
235 |
| K+ |
138 |
| Kr |
(110) |
| La |
188 |
| La3+ |
103 |
| Li |
157 |
| Li+ |
76 |
| Lu |
172 |
| Lu3+ |
86 |
| Mg |
160 |
| Mg2+ |
72 |
| Mn |
137 |
| Mn2+ |
70 |
| N |
(75) |
| Na |
191 |
| Na+ |
102 |
| Ne |
(69) |
| Atom/Ion | r(pm) |
| Ni |
125 |
| Ni2+ |
70 |
| O |
(73) |
| O2- |
140 |
| Os |
135 |
| P |
(110) |
| Pb |
175 |
| Pb2+ |
119 |
| Pd |
137 |
| Pd2+ |
86 |
| Po |
153 |
| Pt |
139 |
| Pt2+ |
80 |
| Pt4+ |
77 |
| Rb |
250 |
| Rb+ |
152 |
| Rh |
134 |
| Rn |
(145) |
| Ru |
134 |
| S |
(102) |
| S2- |
184 |
| Sb |
161(143) |
| Sb3+ |
76 |
| Sc |
164 |
| Sc3+ |
75 |
| Atom/Ion | r(pm) |
| Se |
(117) |
| Se2- |
198 |
| Si |
(118) |
| Sn |
158(140) |
| Sn2+ |
118 |
| Sr |
215 |
| Sr2+ |
118 |
| Te |
(135) |
| Te2- |
221 |
| Th |
180 |
| Ti |
147 |
| Ti3+ |
67 |
| Tl |
171 |
| Tl+ |
150 |
| Tl3+ |
88 |
| U |
156 |
| V |
135 |
| V2+ |
79 |
| W |
141 |
| Xe |
(130) |
| Y |
182 |
| Y3+ |
90 |
| Zn |
137 |
| Zn2+ |
74 |
| Zr |
160 |
*1 Å = 100pm
*Metallic radii for 12-coordination are given for all metals. Covalent radii are in parentheses. Ionic radii are for six-coordination.
Reference: A.F. Wells, "Structural Inorganic Chemistry," 5th ed., Clarendon Press, Oxford, 1984, p. 1288 (metallic radii for 12-coordination); Huheey, pp. 292 (covalent radii for nonmetals); R.D. Shannon, Acta Crystallogr., Sect. A: Found. Crystallogr., 32, 751 (1976) (ionic radii for 6-coordination).