Electron configuration, quantum numbers, and periodic trends (atomic radius, ionization energy, electronegativity) tested on the MCAT.
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- What does the principal quantum number (n) describe?
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The main energy level (shell) of an electron and its average distance from the nucleus.- What does the azimuthal (angular momentum) quantum number (l) describe?
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The shape of an electron's subshell.- What is the allowed range of values for the azimuthal quantum number l, given principal quantum number n?
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Any integer from 0 to n minus 1.- What does the magnetic quantum number (ml) describe?
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The orientation of an orbital in space.- What is the allowed range of values for the magnetic quantum number ml, given l?
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Any integer from negative l to positive l, including zero.- What does the spin quantum number (ms) describe?
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The intrinsic spin direction of an electron.- What are the two possible values of the spin quantum number ms?
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+1/2 and -1/2- Which subshell letter corresponds to l = 0?
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s- Which subshell letter corresponds to l = 1?
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p- Which subshell letter corresponds to l = 2?
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d- Which subshell letter corresponds to l = 3?
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f- What is the maximum number of electrons that can occupy an s subshell?
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2- What is the maximum number of electrons that can occupy a p subshell?
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6- What is the maximum number of electrons that can occupy a d subshell?
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10- What is the maximum number of electrons that can occupy an f subshell?
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