PPT Slide

51

Network covalent solids.

• In network covalent solids, separate particles are not present. Strong covalent bonds link the atoms together throughout the crystal lattice.

• All these substances have very high melting  and boiling points, but their conductivity  and hardness vary.

• Diamond (like most network covalent solids) is  an electrical insulator.

• Mobile p electrons allow graphite to conduct electricity, but only in the plane of the sheets.

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