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17 Cards in this Set
- Front
- Back
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Name all the quantum numbers used to describe orbitals.
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1. Principle (n)
2. Angular momentum (l) 3. Magnetic (ml) |
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What does the principle quantum number tell us ?
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The energy of the orbital.
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What does the angular momentum quantum number tell us ?
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The shape of the orbital.
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What does the magnetic quantum number tell us ?
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The orientation in space, or the amount of electrons in that orbital.
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Which quantum number do the orbitals in a electron shell have in common ?
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The principle quantum number (n).
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Which quantum numbers do the orbitals in a electron subshell have in common ?
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1. Principle quantum number
2. Angular momentum quantum number |
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Describe the concept radial probability density.
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It is the probability that we will find an electron a certain distance from the nucleus of an atom.
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True or false: In many-electron atoms, the electrons in any give principle quantum number have the same energy.
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False. The energy of those atoms increase with an increase in the angular momentum quantum number.
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What quantum number is given to individual electrons to show in which direction they spin ?
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Spin magnetic quantum number.
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Describe the Pauli exclusion principle.
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No two electrons can have the same quantum numbers (n, l, ml and ms). Thus if two electrons are found in a single orbital, they must spin in opposite directions.
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Describe Hund's Rule.
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For degenerate orbitals, the lowest energy state is retained when the number of electrons with the same spin is maximized.
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What is the electron configuration of Li ?
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1s^2,2s^1.
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What is the condensed electron configuration of Li ?
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[He]2s^1.
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Describe what is meant with the term valence electrons.
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It is the electrons of an atom that is not contained within its noble gas core.
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Which sub shells do the representative elements fill ?
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S and P.
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Which sub shells do the transition metals fill ?
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S,P and D.
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Which sub shells do the lanthanides and actinides fill ?
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S, P, D and F.
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