Metallic Bonding Strong forces of attraction are responsible for the high melting point of most metals.

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Presentation transcript:

Metallic Bonding Strong forces of attraction are responsible for the high melting point of most metals.

Metallic Bonding The chemical 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

Packing in Metals Model: Packing uniform, hard spheres to best use available space.

Metal Alloys Substitutional Alloy: some metal atoms replaced by others of similar size.

Metal Alloys Interstitial Alloy: Interstices (holes) in closest packed metal structure are occupied by small atoms.

Properties of Metals Good conductors of heat and electricity Malleable (thin sheets) Ductile (drawn into wires) High tensile strength Luster