APPLET Chemistry · Yr 8, 9, 10, 11

Bohr Model Explorer

Interactive explorer of the Bohr model for elements 1–20. Visualize electron shells and their occupancy following s/p subshell filling and Hund's rule. See the nucleus with protons and neutrons (interleaved and packed on a Fibonacci spiral). Slide to step through elements, use arrow keys, or click element chips. Statistics show proton, neutron, electron, and mass number counts.

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  • Bohr model
  • electrons
  • shells
  • electron configuration
  • protons
  • neutrons
  • nuclear structure
  • Hund's rule
  • interactive