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Explained photoelectric effect
Named energy packets "photons"
Electrons are not capable of absorbing energy
Energized gasses produce light of distinct wavelengths
Electrons falling from energized states
Explained emission spectra with energy states of hydrogen
Assumed that electrons did not spiral into nucleus w/o explanation
No element except hydrogen explained, flaws in planetary model.
Louis de Broglie
Returns to Bohr postulate
Proof: Electrond diffract through crystal
Equations to find probabilities of electron location for each orbital: Quantum/wave mechanics
Probability density: square of wave function
Things explained by Quantum model for electrons
Colors of Transition metal aqeus ions
Bonding patterns of ions
Paramagnetic behavior of some atoms
Electrons always fill the lowest energy orbitals first (violated with some transition metals - Cr)
-l...0...+l, defines orientation of orbital in space
distingishes between orbitals in the same subshell
Magnetic quantum number
electron pairs explain what?
lines in emission spectra actually closely spaced pairs, split by opposite magnetic fields.
Weird orbital filling trend with certain transition metals
Cr and Mo, Cu and Au and Ag, others
Will fill both s and d orbitals singly rather than completely filling s orbital. ex: Cr= [Ar] 4s^1 3s^5
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