SPECTROSCOPY Flashcards
1
Q
Functional group that absorbs maximum radiation in the UV or visible regions
A
Chromophore
2
Q
Functional group which does not give rise to an absorption band by itself, but upon being attached to a chromophore
A
Auxochrome
3
Q
Parts and properties of a wave
A
- Crest
- Trough
- Amplitude
- Wavelength
- Wavenumber
- Period
- Frequency
4
Q
Point with the max upward (+) displacement
A
Crest
5
Q
Point with the max downward (-) displacement
A
Trough
6
Q
The maximum height of a wave
A
Amplitude
6
Q
The distance between 2 identical adjacent
A
Wavelength
7
Q
The number of cycles per unit distance
A
Wavenumber
8
Q
The time required for one cycle to pass a fixed point in space
A
Period
9
Q
The number of cycles which pass a fixed point in space per second
A
Frequency
10
Q
Units for wavelength
A
Nanometer
Micrometer
Angstrom
11
Q
Give the EM region with its wavelength
A
- Ultraviolet - 180 - 380
- Visible - 380 - 780
- Near IR - 780 - 3,000
- Medium IR - 3,000 - 15,000
- Group frequency region - 3-8 um (Group of constituent)
- Fingerprint region - 8-15 um (Specific compound or functional group)
- Far IR - 15,000 - 300,000
