Which of the following systems will show electron spin resonance (ESR) spectrum? (i) H (ii) (iii)
(iv)
(v)
(vi)
Calculate the ESR frequency of an unpaired electron in a magnetic field of 3000 G (0.3 T).
[Given: ;
; and
]
What is meant by AX spin system in NMR? Draw a schematic energy level diagram for this system and show the allowed transitions.
See Answer →Predict the number of signal and multiplicity of peaks in the spectrum of the following compounds:
a) 2,5-Dimethylhexane
b) Cyclohexanol
Explain why the spin splitting is not observed in
spectrum?
The molecule has 3 fundamental vibrational frequencies. One is Raman active and two are IR active. Identify the structure of the molecule.
How does the rule of Mutual Exclusion help in predicting the symmetry in case of and
molecules?
A light source of wavelength illuminates a metal surface and electron are ejected with the maximum kinetic energy 2 eV. If the same surface is illuminated by a light source of wavelength
, then calculate the maximum kinetic energy of the ejected electron. (Work function of metal is 1 eV)
Electronic transitions are called vertical transitions. Comment.
See Answer → Raman rotational spectra of was observed with Hg light with Rayleigh line at
. Stokes lines were observed at
. Draw the rotational energy level diagram with Stokes and anti Stokes lines.
The frequencies of the first and second overtones respectively are exactly double and triple of the fundamental vibration frequency. Comment.
See Answer →Calculate the number of vibrational modes for a molecule of methane.
See Answer → has bond length
. Calculate the wavenumbers of the first four lines in its microwave spectrum.
[Given: mass of C=12.000 u and mass of N=14.007 u]
The rotational Raman spectrum of a diatomic molecule has the first line of a series of Stokes and anti-Stokes lines at , relative of the
of incident light. What would be its bond length.
In Raman spectra, the Stokes line are more intense than the anti-Stokes lines. Why?
See Answer →Structural maintenance of chromosomes
See Answer →Dynamic behavior of microtubules
See Answer →Hot spot Mutation
See Answer →Modification in DNA and Hisntones
See Answer → Assuming that the force constants of H-Cl and D-Cl are the same, calculate the fundamental vibration frequency of D-Cl if that of H-Cl is .