electronic spectroscopy Flashcards

1
Q

the energy associated with transitions between electronic states in molecules correspond tooo

A

UV
VISIBLE

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2
Q

absorption in the visible region gives what

A

gives things colour!!

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3
Q

main types of electronic transitions that allow colour

A
  • between d orbitals in transition metal ions
  • between an orbital in a ligand and an orbital in a metal ion
  • between 🥧 orbitals in conjugated organic compounds
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4
Q

what is colour the result of

A

energy from the VISIBLE light region of EMS being absorbed due to corresponding to the energy gap between 2 electronic energy levels

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5
Q

spectrophotometers

A

specs that measure absorbance of UV VIS radiation at a single wavelength

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6
Q

both atoms and molecules have electrons in quantised energy levels meaning both haveeee

A

electronic absorption spectra

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7
Q

in molecules how are electronic transitions seen

A

an electron in a lower energy occupied molecular orbital is promoted to a higher energy unoccupied or partially occupied molecular orbital

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