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Lecture 4 - Ch 2 pt 3

Lecture 4 - Ch 2 pt 3 - Electrostatic Model of Metallic...

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Chapter 2 - 41 Electrostatic Model of Metallic Bonding Metallic Atoms: ± 1, 2 or 3 valence e - ± e - not bound to specific atoms ± belong to metal as a whole ± Nonvalence e - & nuceli = ion cores ..net +ve charge ± = magnitude to total valence e - charge/atom ± Z is # valence electrons per ion core ± In principle, for ± Na, Z = 1, ± Mg, Z = 2 ± Al, Z = 3… etc. ± non-directional bond ± weak (Hg) to strong (W) a.k.a.: “ delocalized” electrons; “electron gas”; “glue”
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