Antimony Electron Configuration
Orbital diagram
- Valence electrons
- 5
- Unpaired electrons
- 3
- Block
- p-block
- Magnetism (atom)
- paramagnetic
Electrons per shell
| K (n = 1) | 2 |
|---|---|
| L (n = 2) | 8 |
| M (n = 3) | 18 |
| N (n = 4) | 18 |
| O (n = 5) | 5 |
Antimony ion configurations
| Ion | Electrons | Configuration |
|---|---|---|
| Sb3+ | 48 | [Kr] 4d10 5s2 |
| Sb5+ | 46 | [Kr] 4d10 |
How to write it
Place 51 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. Antimony sits in period 5, group 15, in the p-block, so its last electron enters a p subshell. Replacing the inner electrons with the previous noble gas gives the shorthand [Kr] 4d10 5s2 5p3.
Try antimony and its ions in the calculator, or see the full antimony data sheet.
Antimony electron configuration FAQ
What is the electron configuration of antimony?
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p³. Shorthand (noble gas) notation: [Kr] 4d¹⁰ 5s² 5p³.
What is the noble gas configuration of antimony?
[Kr] 4d¹⁰ 5s² 5p³. The bracket stands for the Kr core electrons.
How many valence electrons does antimony have?
5 (outer shell (n = 5)).
How many unpaired electrons does antimony have?
3 in the ground state, following Hund’s rule. An atom with unpaired electrons is paramagnetic.
What is the electron configuration of Sb3+?
[Kr] 4d¹⁰ 5s² (48 electrons).
What is the electron configuration of Sb5+?
[Kr] 4d¹⁰ (46 electrons).