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November 30, 2025
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dec 29, 1912 - Bohr

Description:

He created the cuantum atomic model.
He stated that chemical properties of an element were determined by the amount of electrons present in the outer orbits and an electron cloud can drop from one orbital to a lower orbital, emitting a photon of energy.

Added to timeline:

Date:

dec 29, 1912
Now
~ 112 years ago

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