The dissociation energy is the energy required to separate the two atoms in a diatomic molecule in their ground-state.If the dissociation energy of molecular oxygen is 7.2 eV,then calculate the maximum wavelength of light from the Sun that can break apart atmospheric O₂. A)1.7 $\times$ 10^-7 nm B)1.7 $\times$ 10^-8 m C)1.7 $\times$ 10^-9 m D)1.7 $\times$ 10^-7 m E)1.7 $\times$ 10² m

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Quizplus · Accepted Answer

The energy of a photon is given by E = hc/λ. Rearranging for λ gives λ = hc/E. Using h = 4.135667696 × 10^-15 eV·s, c = 3 × 10^8 m/s, and E = 7.2 eV, we find λ ≈ 1.7 × 10^-7 m.

The Dissociation Energy Is the Energy Required to Separate the Two