quantum numbers

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9 Terms

1
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principal quantum number

  • energy level of electron

  • n=1, 2, 3, 4…

<ul><li><p>energy level of electron</p></li><li><p>n=1, 2, 3, 4…</p></li></ul><p></p>
2
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secondary quantum number

  • subshell/orbital shape

  • l = n - 1

  • if n = 3, l = 0, 1, 2

<ul><li><p>subshell/orbital shape</p></li><li><p>l = n - 1 </p></li><li><p>if n = 3, l = 0, 1, 2</p></li></ul><p></p>
3
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magnetic quantum number

  • orbital/subshell orientation (shape)

  • ml = -l … 0… +l

  • if l = 1, ml = -1, 0, 1

  • if l = 3, ml = -3, -2, -1, 0, 1, 2, 3

<ul><li><p>orbital/subshell orientation (shape)</p></li><li><p>m<sub>l</sub> = -l … 0… +l</p></li><li><p>if l = 1, m<sub>l</sub> = -1, 0, 1</p></li><li><p>if l = 3, m<sub>l</sub> = -3, -2, -1, 0, 1, 2, 3</p></li></ul><p></p>
4
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magnetic spin number

  • spin of electron

  • ms = +1/2 (clockwise spin), -1/2 (counterclockwise spin)

<ul><li><p>spin of electron</p></li><li><p>m<sub>s </sub>= +1/2 (clockwise spin), -1/2 (counterclockwise spin)</p></li></ul><p></p>
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what are the purposes of quantum #s?

estimate location of electron

6
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s - orbital

  • l = 0

  • 1 orbital: ml = 0

  • 2 electrons

  • spherical

<ul><li><p>l = 0</p></li><li><p>1 orbital: m<sub>l</sub> = 0</p></li><li><p>2 electrons</p></li><li><p>spherical</p></li></ul><p></p>
7
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p-orbital

  • l = 1

  • 3 orbitals: ml = -1, 0, 1

  • 6 electrons

  • dumbell

<ul><li><p>l = 1</p></li><li><p>3 orbitals: m<sub>l</sub> = -1, 0, 1</p></li><li><p>6 electrons</p></li><li><p>dumbell</p></li></ul><p></p>
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d-orbitals

  • l=2

  • 5 orbitals: ml = -2, -1, 0, 1, 2

  • 10 electrons

<ul><li><p>l=2</p></li><li><p>5 orbitals: m<sub>l</sub> = -2, -1, 0, 1, 2</p></li><li><p>10 electrons</p></li></ul><p></p>
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f-orbitals

  • l = 3

  • 7 orbitals: ml = -3, -2, -1, 0, 1, 2, 3

  • 14 electrons