What accounts for the low melting and boiling points of covalent molecules?
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They have weak intermolecular forces.
- They are three-dimensional structures.
- They have definite shapes.
- They possess shared electron pairs
The correct answer is: A
Explanation
Covalent molecules have low melting and boiling points because of their weak intermolecular forces.The force of attraction between the molecules in a covalent compound is weak, so it takes little energy to break the bonds.
Yes, all covalent compounds have a three-dimensional structure due to the directional nature of covalent bonds, which means the atoms within a molecule are arranged in a specific spatial orientation, giving the molecule a definite shape in three dimensions; this is explained by the Valence Shell Electron Pair Repulsion (VSEPR) theory.
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