Bohr (1920s)
I. Rutherford's model was unstable
A. Protons and electrons should attract each other
II. Matter emits light when it is heated
III. Light travels as photons
A. The energy photons carry depends on their wavelengths
IIII. Bohr based his model on the energy (light) emitted by different atoms
A. Each atom has a specific spectra of light
Bohr's Theory
1. Electrons exist in orbitals
2. When they absorb the energy they move to a higher orbital
3.As they fall from a higher orbital to a lower one they release energy as a photon of light
-Nicole
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