1 gen 1913 anni - Bohr
Descrizione:
Electrons move around the nucleus in fixed orbits, an electron in a particular orbit has constant energy. An electron can absorb energy and move to a higher energy orbit of larger radius. An excited electron can fall back to its original orbit by emitting energy as radiation. Electrons can only exist in certain discrete energy levels.
Aggiunto al nastro di tempo:
History of the Atom
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