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← ScienceWhich consequence results when a laser excites valence electrons?
A)Molecular orbitals gain vibrational energy✓
B)Band gaps in solids increase
C)Heat flow becomes unidirectional
D)Atomic nuclei undergo fission events
💡 Explanation
When a laser excites valence electrons, the antibonding orbitals become populated; therefore, the molecule vibrations intensify because the bond order is lowered via destabilized bonds rather than heat generated only through electron-phonon interactions within the solid.
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