Hydrogen Atom Calculator

Calculate quantum properties and energy levels of the hydrogen atom

0 ≤ l ≤ n-1

-l ≤ mₗ ≤ l

Quantum Numbers & Orbital

Orbital

1s

Valid n

1

Valid l

0

Valid mₗ

0

Energy

Energy Level

-13.6000 eV

-2.1790e-18 J

Ionization Energy

13.6000 eV

Degeneracy

1

Angular Momentum

Orbital Angular Momentum |L|

0.0000e+0 J·s

Z-Component Lz

0.0000e+0 J·s

Bohr Model Properties

Bohr Radius

5.2918e-11 m

Electron Velocity

2.1877e+6 m/s

Orbital Period

1.5198e-16 s

About the Hydrogen Atom

The hydrogen atom is the simplest atomic system with exact quantum mechanical solutions. Energy levels are given by E_n = -13.6/n² eV. The quantum numbers n, l, and mₗ define the electron's state, with l determining orbital shape (s, p, d, f...) and mₗ determining spatial orientation.

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.