Chem 102 - Scientists and Experiments

Solid Sphere Model

John Dalton

Plum Pudding Model

J.J. Thompson

Nuclear Model

Ernest Rutherford

Planetary/Hydrogen Model

Niels Bohr

Quantum Model

Erwin Schrodinger

Cathode Ray Tube (electron discovery)

J.J. Thompson

Oil Drop Experiment (charge of electron)

Robert Milikan

Gold Foil Experiment (nucleus discovery)

Ernest Rutherford

Blackbody Radiation (UV Catastrophe)

• Quantization of energy in values (multiples of h)

Max Planck

Photoelectric effect

• Photon duality, ejection of e-

Albert Einstein

Atomic Line Spectra

• Energy levels

Niels Bohr

DeBroglie Equation

• Particle-Wave duality of all matter

Heisenburg Uncertainty Principle

We can only know the position or the speed of an electron at one time, but not both

Schodinger Equation

• Gives us locations where electrons are likely to be found

• Formation of orbitals and QNs