| Period | Group | |
|---|---|---|
| ◀ 9 ▶ | ||
| 1 | ||
| 2 | ||
| 3 | ||
| 4 |
27
Co
Cobalt
[Ar] 4s2 3d7
|
|
| 5 |
45
Rh
Rhodium
[Kr] 5s2 4d7
|
|
| 6 |
77
Ir
Iridium
[Xe] 6s2 4f14 5d7
|
|
| 7 |
109
Mt
Meitnerium
[Rn] 7s2 5f14 6d7
|
Tip: Hover over an element to compare its electron configuration to that of the element below it.