| Period | Group | |
|---|---|---|
| ◀ f5 ▶ | ||
| 1 | ||
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
61
Pm
Promethium
[Xe] 6s2 4f5
|
|
| 7 |
93
Np
Neptunium
[Rn] 7s2 5f4 6d1
|
Tip: Hover over an element to compare its electron configuration to that of the element below it.