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26 Cards in this Set
- Front
- Back
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Aufbau principle?
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electrons fill the lowest energy level possible
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Pauli principle?
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each orbital has a max of 2 electrons with opposite spins
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Hunds rule
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Electrons fill one at a time then pair up
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C means.
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speed of light
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sort of pi looking symbol means
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wavelength
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v means
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frequency
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E means
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photon energy
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h means
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planks constant
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Formula relating wavelength, frequency and speed of light
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c = pi times v
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Wavelength and frequency are___
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inverse
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wavelength and energy are
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inverse
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frequency and energy are
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direct
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speed of electromagnetic radiation is
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constant
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why are there trends?
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shielding
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across a period nuclear charge...
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increases
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# of energy levels
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same
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shiledling electrons
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same
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effective nuclear charge
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increases
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down a group nuclear charge
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increases
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# of energy levels
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increases
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shielding electrons..
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increases
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effective nuclear charge...
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almost the same
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ionization energy is...
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the amount of energy needed to remove an electron
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Two exceptions to electron config. they are?
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Cu
Cr |
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on Cu what happens at the end?
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4s^1 and then 3d^10... 4s gives up an electron
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Cr?
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4s^1 3d^5, 4s gives up one
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