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19 Cards in this Set

  • Front
  • Back
quantum
the minimum quantity of energy that can be gained or lost by an atom
photon
a particle of electromagnetic radiation that has zero rest mass and carries a quantum of energy
ground state
the lowest energy state of an atom
excited state
a state in which an atom has a higher potential energy than it has in its ground state
Bohr Model
electrons orbiting the nucleus and orbites which is based on hydrogen
De Broglie
Electrons act like waves
Heisenburg
Uncertainty Principle: cant determine the exact position of electrons in an atom
Schrodinger
Explained dual nature of electrons
Quantum Numbers
give the probable location of all electrons in an atom
Principle Quantum Number
INdicates main energy level; as n increases, energy and distance from nucleus increase
Angular Momentum Quantum Numbers
Indicates shape of an orbital
Magnetic Quantum Numbers
Orientation around the nucleus
Spin Quantum Numbers
Indicates spin rotation of electrons
Aufbau Principle
an electron occupies the lowest energy orbital that can recieve it
Electron Configuration
the arrangement of electrons in an atom
Hunds Rule
orbitals of equal energy are each occupied by one electron before and orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin
Pauli exclusion Principle
no two electrons in the same atom can have the same set of four quantum numbers
Highest Occupied Level
the electron-containing main energy level with the highest principal quantum number
Inner Shell Electron
an electron that is not in the highest occupied energy level.