Hydrogen Electron Configuration
Hydrogen (H) · 1 electrons · Reactive nonmetal
1s1
Noble gas notation: 1s1
Orbital diagram
↑
1s- Valence electrons
- 1
- Unpaired electrons
- 1
- Block
- s-block
- Magnetism (atom)
- paramagnetic
Electrons per shell
| K (n = 1) | 1 |
|---|
Hydrogen ion configurations
| Ion | Electrons | Configuration |
|---|---|---|
| H+ | 0 | (no electrons) |
| H− | 2 | 1s2 |
How to write it
Place 1 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. Hydrogen sits in period 1, group 1, in the s-block, so its last electron enters an s subshell.
Try hydrogen and its ions in the calculator, or see the full hydrogen data sheet.
Hydrogen electron configuration FAQ
What is the electron configuration of hydrogen?
1s¹. Shorthand (noble gas) notation: 1s¹.
What is the noble gas configuration of hydrogen?
1s¹.
How many valence electrons does hydrogen have?
1 (outer shell (n = 1)).
How many unpaired electrons does hydrogen have?
1 in the ground state, following Hund’s rule. An atom with unpaired electrons is paramagnetic.
What is the electron configuration of H+?
(no electrons) (0 electrons).
What is the electron configuration of H−?
1s² (2 electrons).