Type Of Formed Structure Bonding Description Properties Examples Substance From High melting and Lattice of positive metal ions held in a Gold, copper, Metallic Metals Giant Metallic boiling points; cloud of delocalised electrons. steel, silver electrical conductors Sodium chloride, Metals and Lattice of alternatingly charged ions, High melting and Ionic Giant Ionic magnesium oxide non-metals. held by electrostatic force. boiling points all salts. Help together by a shared pair of Water, ammonia, Covalent Low melting and Non-metals Simple Covalent electrons, with weak intermolecular diatomic Molecular boiling points bonds. elements. Sublimes at very high Giant three-dimensional tetrahedral temperatures; hard: Diamond structure with no free electrons.. electrical insulator Giant Covalent Non-metals Giant Covalent Sublimes at very high Layered hexagonal structure with temperatures; soft; Graphite some free electrons. electrical conductor
Type Of Substance Formed From Structure Bonding Description Properties Examples Metallic Metals Giant Metallic Lattice of positive metal ions held in a cloud of delocalised electrons. High melting and boiling points; electrical conductors Gold, copper, steel, silver Ionic Metals and non-metals. Giant Ionic Lattice of alternatingly charged ions, held by electrostatic force. High melting and boiling points Sodium chloride, magnesium oxide all salts. Covalent Molecular Non-metals Simple Covalent Help together by a shared pair of electrons, with weak intermolecular bonds. Low melting and boiling points Water, ammonia, diatomic elements. Giant Covalent Non-metals Giant Covalent Giant three-dimensional tetrahedral structure with no free electrons.. Sublimes at very high temperatures; hard: electrical insulator Diamond Layered hexagonal structure with some free electrons. Sublimes at very high temperatures; soft; electrical conductor Graphite
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