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← ScienceWhich outcome dominates when short wavelength radiation impinges on a liquid dielectric molecular film?
A)Electronic excitation and bond scission✓
B)Vibrational mode excitation and heating
C)Rotational transition and polarization
D)Translational kinetic energy increase and ejection
💡 Explanation
When short wavelength radiation strikes a dielectric, electronic excitation leads to bond scission because the high energy photons induce transitions to higher energy electronic states, potentially breaking molecular bonds. Therefore, bond scission dominates, rather than heating, polarization, or ejection that require lower incident energy or different target properties.
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