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Metallic bonding
Metallic bonding results from the attraction between metal cations and delocalized electrons in the "sea" of electrons. This allows electrons to move freely throughout the metal and form metallic bonds between atoms. Metallic bonding gives metals properties like high melting points, conductivity of heat and electricity, and malleability.
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Metallic bonding involves strong attractions between metal cations and a sea of electrons, leading to properties like high melting points.Metallic bonding allows electrons to move freely due to overlapping orbitals, resulting in a closest packing arrangement with 12 nearest neighbors.
Metal alloys are classified into substitutional alloys, where similar-sized atoms replace each other, and interstitial alloys, where small atoms occupy interstitial sites.
Metals are characterized by high conductivity, malleability, ductility, tensile strength, and a luster.
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Metallic bonding
- 1. Metallic Bonding Strong forcesof attraction are responsible for the high melting point of most metals.
- 2. CA Standards Students knowatoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds.
- 3. Metallic Bonding Thechemical bonding that results from the attraction between metal cations and the surrounding sea of electrons Vacant p and d orbitals in metal's outer energy levels overlap, and allow outer electrons to move freely throughout the metal Valence electrons do not belong to any one atom
- 4. Packing in Metals Model:Packing uniform, hard spheres to best use available space. This is called closest packing. Each atom has 12 nearest neighbors.
- 5. Metal Alloys Substitutional Alloy:some metal atoms replaced by others of similar size.
- 6. Metal Alloys Interstitial Alloy: Interstices (holes) in closest packed metal structure are occupied by small atoms.
- 7. Properties of Metals Metals are good conductors of heat and electricity Metals are malleable Metals are ductile Metals have high tensile strength Metals have luster