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Atomic Theory Chem

Planck's Hypothesis Energy is quantized, and energy of a wavelength is related to its frequency
the higher the frequency... ... the higher the energy
wavelength and frequency are _____ proportional inversely
matter has wavelike properties called wave-particle duality of nature
quantum mechanics very small pieces of matter moving very quickly
Newtonian mechanics matter under usual conditions
Heisenburg Uncertainty Principle Its impossible to know both the location and direction of an atom (RIP Bohr model)
Scroedinger's Equations modern atomic theory; describes with 90% probability where electrons are likely to be found
Aufbau Principle electrons occupy the lowest energy orbitals first
Pauli Exclusion Principle an atomic orbital can only hold two electrons, each with a different spin
Hund's Rule with orbitals of the same energy, single electrons occupy each orbital before they pair up
Principle Quantum Number (n) tells the principle energy level of the electron and distance from nucleus
the greatest number of electrons that can be found is each energy level can be calculated with the equation: 2n^2
Second Quantum Number (l) tells you the sublevels of the electron (s, p, d, f)
S holds 2 electrons and is shaped like a sphere
P holds 6 electrons and is shaped like a dumbell
D holds 10 electrons
F holds 14 electrons
Third Quantum Number (m): the space occupied by one pair of electrons is called an orbital (each sublevel has half the number of orbitals as it does electrons)
Fourth Quantum Number (s) Spin (in a given orbital, each electron must *probably* spin in a different direction)
Created by: msullyart



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