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10 Cards in this Set
- Front
- Back
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Quantum Theory
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describes mathematically the wave properties of electrons and other very small particles
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Orbital
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three-dimensional region around the nucleus that indicates the probable location of an electron
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Quantum Numbers
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specify the properties of atomic orbitals and the properties of electrons in orbitals
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Principle Quantum Number
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symbolized by n, indicates the main energy level occupied by the electron
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Angular Momentum Quantum Number
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symbolized by l, indicates the shape of the orbital
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Magnetic Quantum Number
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symbolized by m, indicates the orientation of an orbital around the nucleus
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Spin Quantum Number
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has only two possible values-(+1/2, -1/2)-which indicate the two fundamental spin states of an elctron in an orbital
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Electron Configuration
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the arrangement of electrons in an atom
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Aufbau Principle
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an electron occupies the lowest energy orbital that can receive it
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Pauli Exclusion Principle
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no two electrons in the same atom can have the same set of four quantum numbers
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