Electron Configuration of Hydrogen (H)
What is the electron configuration of Hydrogen?
The electron configuration of Hydrogen (H, Z=1) is 1s¹. In noble gas shorthand: 1s¹. It has 1 unpaired electron(s) and is a s-block element.
| Symbol | H |
| Atomic Number | 1 |
| Full Electron Configuration | 1s¹ |
| Noble Gas Shorthand | 1s¹ |
| Block | s |
| Period | 1 |
| Group | 1 |
| Unpaired Electrons | 1 |
| Exception? | No |
Orbital Filling Order
Following the aufbau principle, the 1 electrons in Hydrogen fill orbitals in order of increasing energy: 1s (1 electron).
Each orbital is filled according to the Pauli exclusion principle (at most 2 electrons per orbital) and Hund's rule (electrons occupy degenerate orbitals singly before pairing).
Noble Gas Shorthand
Hydrogen is a light element (Z=1) with no noble gas core to abbreviate. Its full configuration 1s¹ is already concise.
Valence Electrons
The valence shell of Hydrogen contains 1 electron in the 1s subshell. These outermost electrons determine Hydrogen's chemical reactivity, bonding behavior, and position in the periodic table as a s-block element in period 1.
Visualize orbital filling with 3D orbital shapes, aufbau principle, and noble gas shorthand for 36 elements.
Explore Hydrogen in the Electron Configuration ExplorerRelated Topics
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Electron Configuration of Lithium
Orbital filling for Lithium (s-block)
Electron Configuration of Beryllium
Orbital filling for Beryllium (s-block)
Hydrogen on the Periodic Table
Full properties and periodic trends for Hydrogen
Orbital Hybridization
See how atomic orbitals mix to form sp, sp2, and sp3 hybrids