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The Evolution of the Atomic Theory



He mathematical worked out a model of a hydrogen atom. This explained the emission line spectrum of only certain wavelengths (certain colours) using Planck's quantum concept. The Bohr atom Model: electron energy levels are fixed at certain amounts or distances from nucleus; electron transitions from higher to lower levels result in separate wavelengths of emitted light. Bohr conjectured that an atom could exist only in a discrete set of stable energy states.

Here we see Bohr's model of the atom.


Bohr also contributed to the clarification of the problems encountered in quantum physics

Chemirty 11 project The Evolution of the Atomic Theory