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Which consequence results given thermal stress on magnesium oxide (MgO)?

A)Decreased ionic lattice energy occurs
B)Covalent character significantly increases
C)Metallic bonding becomes dominant
D)Van der Waals radius increases dramatically

💡 Explanation

Decreased ionic lattice energy will occur because increased thermal stress weakens electrostatic attractions within the crystalline MgO. Consequently, the lattice energy is lowered, rather than a gain in covalent nature involving electron sharing.

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