Metallic radii of the transition metals
12-coordinate metallic radii of the three transition series, groups 3–12: the period-5 and period-6 members of a group are almost the same size (the lanthanide contraction).
| 4 | 3 | 164 | |
| 4 | 4 | 147 | |
| 4 | 5 | 135 | |
| 4 | 6 | 129 | |
| 4 | 7 | 137 | |
| 4 | 8 | 126 | |
| 4 | 9 | 125 | |
| 4 | 10 | 125 | |
| 4 | 11 | 128 | |
| 4 | 12 | 137 | |
| 5 | 3 | 182 | |
| 5 | 4 | 160 | |
| 5 | 5 | 147 | |
| 5 | 6 | 140 | |
| 5 | 7 | 135 | |
| 5 | 8 | 134 | |
| 5 | 9 | 134 | |
| 5 | 10 | 137 | |
| 5 | 11 | 144 | |
| 5 | 12 | 152 | |
| 6 | 3 | 188 | |
| 6 | 4 | 159 | |
| 6 | 5 | 147 | |
| 6 | 6 | 141 | |
| 6 | 7 | 137 | |
| 6 | 8 | 135 | |
| 6 | 9 | 136 | |
| 6 | 10 | 139 | |
| 6 | 11 | 144 | |
| 6 | 12 | 155 |
Lanthanum stands in group 3 of period 6. Metals with unusual structures (manganese, mercury) are not strictly comparable even after conversion to 12-coordination.