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Which statement best describes the properties of covalent compounds?

  1. They are always solid at room temperature, are brittle, and have a high melting point.
  2. They may be gases, liquids, or solids at room temperature, and have a low melting and boiling point.
  3. They are always composed of an equal proportion of cations to anions.
  4. They are always liquid at room temperature, and have a high melting and boiling point.
  5. They are good conductors of heat and electricity, and are ductile and malleable.

Verified Answer :

redhead0507

Covalent network. A solid that is extremely hard, that has a very high melting point, and that will not conduct electricity either as a solid or when molten is held together by a continuous three-dimensional network of covalent bonds. Examples include diamond, quartz (SiO 2 ), and silicon carbide (SiC). The electrons are constrained in pairs to a region on a line between the centers of pairs of atoms.


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