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Atomic scientist timeline
Atomic scientist timeline
Ernest Rutherford (1909)
Positive particles in nucleus and negative particles outside of nucleus
First to suggest that atoms are mostly empty space
J.J Thomson (
1897
)
First to suggest the atoms contain smaller particles
Discovered electrons
John Dalton (
late 1700's
)
Atoms cannot be divided or destroyed
All elements are made from atoms
Niles Bohr (1913)
Orbits are called energy levels
Electrons move around nucleus in fixed orbits
Erwin Shrodinger (1930's)
Nucleus contains protons and neutrons
Locations of electrons cannot be known
