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← ScienceWhich outcome results when thermal stress exceeds ionic bond strength?
A)Crystal lattice structure begins to degrade✓
B)Electrical conductivity abruptly rises to infinity
C)Material undergoes spontaneous nuclear fission
D)Diamagnetic properties spontaneously transform to ferromagnetic
💡 Explanation
When thermal stress overcomes the holding force, the crystal structure degrades because atoms vibrate excessively and break their position, causing thermal dilation; thus, ionic bonds break, rather than immediate phase change because metallic bonds would change together.
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