July 10, 2020
For educational institutions
⟶ Updated 8 Nov 2017 ⟶
List of edits
John Dalton - Pictured atoms as tiny, in destructive particles, with no internal structure
J,J Thomson - descovered the electron.
Hantaro Nagaoka - A atom has a central nucleus. Electrons move in orbits like the rings around the Saturn.
Ernest Rutherford - Discovers a atom has a small, dense, positively charged nucleus.
Niels Borhr's - Electron moves in a circular orbit at fixed distances from the nucleus.
Louis de Broglie - Moving particles like electrons has some properties of waves.
Erwin Schrodinger - Develops mathematical equations to describe the motion of electrons in atoms. Leads to the electron cloud model.
James Chadwick - Confirms the existence of neutrons, which have no charge. Atomic nuclei contain neutrons and positively charged protons.
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