CHEM 241 Unit 3
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17 Terms
10³
kilo
10^-2
centi
10^-3
mili
10^-6
micro
10^-9
nano
10^-12
pico
10^-15
femto
vibrational transition
what happens when a molecule absorbs infrared photons
rotational transition
what happens when a molecule absorbs microwave photons
Internal Conversion
nonradiative transition of electronic states of the same spins (S1 —> So)
Intersystem crossing
nonradiative transition of electronic states of different spins (S1 —> T1, T1—> S0)
Fluorescence
Radiative transition S1 —> So
Phosphorescence
Radiative transition T1—> S0
Light amplification by stimulated emission of radiation
LASER acronym
grating
optical element with closely spaced lines
diffraction
bending of light by grating
