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← ScienceWhich consequence results when atomic spacing changes slightly in crystal lattices?
A)Varying band gap is observed✓
B)Radioactivity level immediately increases
C)Density sharply decreases overall
D)Material loses all structural rigidity
💡 Explanation
Altering atomic spacing affects the electron energy levels; band gap changes results due to the **overlap alterations in atomic orbitals** when lattices move. Therefore, the band gap shifts, rather than a change in radioactivity, because that arises from nuclear instability.
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