Why do covalent compounds generally have low melting and boiling points?
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A.
They have strong electrostatic forces.
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B.
They contain metallic bonds.
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C.
They have a rigid lattice structure.
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D.
They have weak intermolecular forces.
Correct Answer:
D. They have weak intermolecular forces.
Explanation:
Covalent compounds typically have low melting and boiling points because they are held together by weak intermolecular forces, such as London dispersion forces or dipole-dipole interactions, rather than strong ionic or metallic bonds. While the covalent bonds within the molecules themselves are strong, the attractions between separate molecules require relatively little energy to overcome, allowing them to transition to liquid or gaseous states at lower temperatures.
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