UV-Vis / Electronic Transitions

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Last updated 5:46 PM on 4/26/26
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21 Terms

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HOMO

Highest occupied molecular orbital

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3
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LUMO

Lowest unoccupied molecular orbital

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5
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Electronic transition

Electron absorbs light and jumps to higher

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7
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Photon energy equation

E = hc/λ

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9
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Shorter wavelength

Higher energy

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11
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Longer wavelength

Lower energy

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13
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UV

Vis λmax

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15
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Observed color

Usually the complementary color of absorbed light

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17
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If molecule absorbs visible light

It appears colored

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If molecule absorbs no visible light

It may appear colorless/white

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21
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image of UV

Vis spectrum