metallic bonding

• Periodicity


  Periodic trends in the properties of elements
• Periodic table


  • Metals on the left side
  • Non-metals on the right side
  • Metalloids (semi-metals) between metals and non-metals
• Metalloids


  Have some properties of metals and other properties of non-metals
• Metallic bonding


  1. Delocalized electrons are strongly attracted to positive cations

  2. Cations are fixed in place and cannot move

  3. Delocalized electrons are free to move
• Delocalized electrons in metals

  Can move freely, enabling metals to conduct electricity
• Metals


  • Generally have high melting and boiling points
  • Do not dissolve when added to water, but often react with it
• Strength of metallic bond

  Increases from lithium to beryllium, resulting in higher melting and boiling points for beryllium
• The video will next cover giant covalent structures and simple molecular structures