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The hydrogen molecule comes apart (dissociates) when it is excited internally by 4.5
eV. If this molecule behaves exactly like a harmonic oscillator with classical frequency
f=8.277-10¹4 rad/s, find the vibrational quantum number corresponding to its 4.5-eV
dissociation energy. Constants: h = 6.626-10-34 [J-s], ħ=h/2π, and w=f. 2π.

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