Nobelium Electron Configuration
Orbital diagram
- Valence electrons
- 2
- Unpaired electrons
- 0
- Block
- f-block
- Magnetism (atom)
- diamagnetic
Electrons per shell
| K (n = 1) | 2 |
|---|---|
| L (n = 2) | 8 |
| M (n = 3) | 18 |
| N (n = 4) | 32 |
| O (n = 5) | 32 |
| P (n = 6) | 8 |
| Q (n = 7) | 2 |
Nobelium ion configurations
| Ion | Electrons | Configuration |
|---|---|---|
| No3+ | 99 | [Rn] 5f14 |
How to write it
Place 102 electrons into subshells in the Aufbau order (1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p), filling s with 2, p with 6, d with 10 and f with 14. Nobelium sits in period 7, in the f-block, so its last electron enters a f subshell. Replacing the inner electrons with the previous noble gas gives the shorthand [Rn] 5f14 7s2.
Try nobelium and its ions in the calculator, or see the full nobelium data sheet.
Nobelium electron configuration FAQ
What is the electron configuration of nobelium?
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 5f¹⁴ 7s². Shorthand (noble gas) notation: [Rn] 5f¹⁴ 7s².
What is the noble gas configuration of nobelium?
[Rn] 5f¹⁴ 7s². The bracket stands for the Rn core electrons.
How many valence electrons does nobelium have?
2 (2 in the outer s subshell).
How many unpaired electrons does nobelium have?
0 in the ground state, following Hund’s rule. With all electrons paired, the atom is diamagnetic.
What is the electron configuration of No3+?
[Rn] 5f¹⁴ (99 electrons).