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19 Cards in this Set
- Front
- Back
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a form of energy that exhibits wave-like behaivor as it travels through space
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electromagnetic radiation
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the distance between corresponding parts on adjacent waves
(crest to crest) |
wavelength
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the number of waves that pass a given point in a specific amount of time
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frequency
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a form of energy that exhibits wave like behavior as it travels through space
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electromagnetic radiation
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numbers that soecify the properties of atomic orbitals and of their electrons
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quantum numbers
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symbolized by n, indicates the main energy level occupied by the electron
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principle quantuum number
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symbolized by l, indicates the shape of an orbital
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orbital quantum number
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symbolized by m, indicates the orientation of an orbital
s, p, d, f |
magnetic quantum number
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symbolized by s, has only two possible values, +1/2, -1/2, which indicates two possible spin states of an electron in an orbital
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spin quantum number
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this model pictures atoms as tiny, indestructible particles, with no internal structure
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dalton's model
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this model pictures electrons embedded in a sphere of positive electrical charge
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thomson's model
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this model finds that an atom has a small, dense positively charged nucleus.
electrons move around the nucleus failed to explain why elements glowed different colors when excited and rhe chemical properties of elements |
rutherford's model
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in this model, the electron moves in a circular orbit at fixed distances from the nucleus
model fell apart for larger atoms |
bohr's model
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posed that electrons can behave like a particle and a wave
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de broglie
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quantum mechanical model
worked for larger atoms places electrons in an orbital |
schrodinger
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states that it is impossible to state both the position and velocity of an electron
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heisenburgs uncertainty principle
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states that an electron occupies the lowest energy orbital that can recieve it
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aufbau principle
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states the orbitals of equal energy are each occupied by one electron before any is occupied by a second electron
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hund's rule
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states that no two electrons in the same atom can have the same four quantum numbers
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pauli exclusion principle
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