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Atomic & Quantum

Bohr Model of Hydrogen

Make the electron jump between energy levels and see the photons absorbed and emitted.

Electron level n1
Energy-13.60 eV
Last jump
Photon wavelength
Series / colour

What you can learn

  • Electrons in an atom can only have certain energies: the energy levels.
  • Jumping down releases a photon; jumping up needs a photon of exactly the right energy.
  • For hydrogen, E = −13.6 eV / n².

Frequently asked questions

Why do atoms emit only certain colours?

Because electrons can only drop between fixed energy levels, so each jump releases a photon of one specific energy and colour.

What is the Balmer series?

Transitions from higher levels down to n = 2. Four of them are visible: red, cyan, blue and violet.

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