covalent solid造句

• Also, same question for a network covalent solid, like diamond.
• As this example shows, there can be no sharp boundary between molecular and network covalent solids.
• Network covalent solids vary from insulating to semiconducting in their behavior, depending on the band gap of the material.
• I don't understand why you say a network covalent solid wouldn't do the same thing, though.
• Materials can be intermediate between molecular and network covalent solids either because of the intermediate organization of their covalent bonds, or because the bonds themselves are of an intermediate kind.
• A network covalent solid consists of atoms held together by a network of covalent bonds ( pairs of electrons shared between atoms of similar electronegativity ), and hence can be regarded as a single, large molecule.
• Melting / boiling such a structure takes a lot of energy as there are strong electrostatic forces of attraction to be overcome to separate each atom from the bulk; B and C are network covalent solids, with an infinite array of atoms held together by strong covalent bonds.