Minimum energy to break the bond:

$\overline{){{\mathbf{E}}}_{\mathbf{m}\mathbf{i}\mathbf{n}}{\mathbf{=}}{\mathbf{h}}{{\mathbf{f}}}_{\mathbf{m}\mathbf{i}\mathbf{n}}}$

Maximum wavelength:

$\overline{){{\mathbf{\lambda}}}_{\mathbf{m}\mathbf{a}\mathbf{x}}{\mathbf{=}}\frac{\mathbf{c}}{{\mathbf{f}}_{\mathbf{m}\mathbf{i}\mathbf{n}}}}$

The energy E in Joules:

E_{min} = (0.1)(1.60 × 10^{-19}) = 1.6 × 10^{-20}J

h is the Plank's constant, given by 6.63 × 10^{-34} J•s

About 0.1 eV is required to break a "hydrogen bond" in a protein molecule. Calculate the minimum frequency and maximum wavelength of a photon that can accomplish this.

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