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Worksheetsspectroscopy
Total questions: 20
Worksheet time: 10mins
Vibrating diatomic molecule obeys
Hookes law
Law of motion
Law of conservation of energy
none
Q Branch
DJ=0
DJ = ±1
DJ=-1
DJ =1
P Branch
DJ=0
DJ=1
DJ=-1
DJ=±1
R Branch
DJ = ±1
DJ = 0
DJ = +1
DJ = -1
BAND CENTER OCCURS AT
⍵
⍵eXe
⍵osc
⍵0
Zero point energy of S.H.O is
⍵osc
⍵e
1/2 ⍵osc
ALL
Hertz can be converted cm-1 dividing by
hc
h
h/n
h/⍵
Selection rule for SHO is
Dv =0
Dv =0,±1
Dv =±1
none
Selection rule for anharmonic oscillator
Dv =±1
Dv =0,±1
Dv =±1,±2,±3
none
MOARSE CURVE IS THE PLOT OF
ENERGY VERSUS BONDLENGTH
ENERGY VERSUS BOND DISSOCIATION ENERGY
ENERGY VERSUS INTERNUCLEAR DISTANCE
DISSOCIATION ENERGY VERSUS INTERNUCLEAR DISTANCE
First overtone occurs at
⍵e(1-4Xe)
⍵e(1-3Xe)
2⍵e(1-3Xe)
⍵e(1-Xe)
Xe is called
Rotational constant
Anharmonicity constant
Oscillation frequency
Wavenumber
HOT BANDS OCCURS AT
⍵e(1-4Xe)
⍵e(1-2Xe)
⍵e(1-3Xe)
2⍵e(1-2Xe)
DJ = -2
Q BRANCH
S BRANCH
P BRANCH
O BRANCH
HOT BANDS OCCUR AT
HIGH TEMPERATURE
LOW TEMPERATURE
HIGH INTENSITY
LOW INTENSITY
IN ALL BRANCHES OF SPECTROSCOPY THE UPPER LEVEL IS REPRESENTED BY
SINGLE PRIME
DOUBLE PRIME
ZERO
NONE
In S.H.O Oscillator, the energy levels are
EQUALLY SPACED
INCREASING SPACING
DECREASING SPACING
NONE
Fundamental vibration occurs at
⍵e(1-Xe)
⍵e(1-2Xe)
2⍵e(1-2Xe)
⍵e(1-3Xe)
In vibrational spectroscopy v is called
vibrational quantum number
rotational quantum number
oscillation quantum number
none
Condition for the molecule to be vibrational active
permanent dipole moment
change in dipolemoment
change in polarisibility of the molecule
All
