A hydrogen iodide molecule, HI, has a force constant of 314 N/m and a bond length of 160 ppm.
A hydrogen iodide molecule, HI, has a force
constant of 314 N/m and a bond length of 160 ppm. Due to the large
difference in mass between the H-atom and the I-atom, the mass to use in
the expression for the vibrational frequency can in good approximation,
be taken as the mass of the H-atom. For the same reason, the rotation
of the molecule can be pictures as an orbital motion of the H-atom
around a stationary I-atom.Calculate the zero-point energy associated
with its rotation in three-dimensional space.
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