Which of the following systems will show electron spin resonance (ESR) spectrum? (i) H (ii) (iii)
(iv)
(v)
(vi)
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Electronic transitions are called vertical transitions. Comment.
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)
How does the rule of Mutual Exclusion help in predicting the symmetry in case of and
molecules?
What information about the molecule can be obtained from a rotation spectrum?
Explain why the atomic spectra are line spectra whereas the molecular spectra are band spectra.
The lifetime of (excited state) is
. If the excited state is
above the ground state determine the linewidth
and ratio
.
Explain the origin of atomic spectrum.