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)
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What is meant by polarizability of a molecule?
Nitrogen has more valence electrons than fluorine or aluminium, therefore its peak appears at the highest binding energy.
The molecule has 3 fundamental vibrational frequencies. One is Raman active and two are IR active. Identify the structure of the molecule.
What is meant by anisotropy of chemical bond? Give an example.
What are different mechanisms that contribute to the relaxation of nuclear spins in the excited state? Explain any one of them.
Write short notes on the following.
Calculate the number of vibrational modes for a molecule of methane.