CHEM 241 SPECTROSCOPY CONCEPTUAL QUESTIONS AND ANSWERS -16

CHEM 241 SPECTROSCOPY CONCEPTUAL QUESTIONS
AND ANSWERS #16
A triplet state is an ___________________ state in which the electron _______ is
_______________ paired with the electron remaining in the _______________. -
correct answer electronic excited
Spin
No longer
Ground state

Name the regions of the electromagnetic spectrum in order of longest to shortest
wavelength. (Hint: longest time to kill you to shortest time to kill you) - correct answer
radiowave
Microwave
Infrared
Visible
Ultraviolet
X ray
Gamma ray

Name the regions of the electromagnetic spectrum in order of shortest to longest
wavelength. (Hint: shortest time to kill you to longest time to kill you) - correct answer
gamma ray
X ray
Ultraviolet
Visible
Infrared
Microwave
Radiowave

Narrowing the widths of the entrance slit and exit slit of a monochromator has which of
the following effects:
1. Reduces the intensity of light coming in to the monochromator
2. Makes the light less monochromatic
3. Decreases the true transmittance for samples
4. Increases true transmittance for samples
5. Increases the stray light of the source
6. Makes light more monochromatic - correct answer 1, 6

A UV spectrometer would best be assembled from? - correct answer deuterium lamp
source
Grating monochromator
Fused silica sample cell
Vacuum photodiode detector