LESSON OBJECTIVES: 
    • DESCRIBE METALLIC BONDING 
    • DESCRIBE AND EXPLAIN THE GENERAL 
    PHYSICAL AND CHEMICAL PROPERTIES OF 
    METALS 
    • DISTINGUISH BETWEEN IONIC, COVALENT, 
    AND METALLIC BONDS. 
    METALLIC BONDING
  • Metallic bonding occurs when the 
   delocalized electrons in metal atoms are 
   attracted to the lattice of positive ions.
  • “Delocalized” means that the electrons do 
   not belong to any one metal nucleus but 
   can spread themselves throughout the 
   metal structure.
  • Because the outer shell electrons in 
   metals can easily be lost, positive ions are 
   easily formed.  
  • When the metal atoms are together, the 
   positive ions form a lattice where the 
   electrons can freely move around.
  PROPERTIES OF METALS EXPLAINED
   • Solid at Room Temp. (except 
    Hg)
   • Metals form a solid crystalline 
    structure due to the formation 
    of cations surrounded by 
    delocalized electrons
    PROPERTIES OF METALS EXPLAINED
    • Good Conductors of Heat 
     and Electricity
    • Delocalized electrons are 
     able to move electricity 
     throughout the crystalline 
     solid structure
  PROPERTIES OF METALS EXPLAINED
   • Have Luster (shiny) 
   • Delocalized electrons absorb 
    and re-emit photons of light
   • The color of a metal is 
    determined by the wavelength 
    of light re-emitted