Hydrogen
Atomic Number (Z): 1
Valence Electrons: 1; Electron Configuration: 1s¹
Electron Configuration Calculator
Chemistry0.0(0)
Determines the electron configuration and number of valence electrons for a given element based on its atomic number.
More tools:Science & Lab Calculators
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Atomic Number (Z) in the units shown.
Step 2
Read Valence Electrons and Electron Configuration in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Oxygen
Atomic Number (Z): 8
Valence Electrons: 6; Electron Configuration: 1s² 2s² 2p⁴
Iron
Atomic Number (Z): 26
Valence Electrons: 8; Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
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