The Chemical Bonds (basics)

• Three types of chemical bonds:


  ionic, covalent and metallic
• Ionic bonding involves oppositely charged ions


  metals and non metals combining
• In metallic bonding the atoms share delocalised electrons


  Occurs in metallic elements and alloys
• Metallic bonding occurs when metal atoms lose their outermost electron(s), forming positively charged ions that attract delocalized electrons from other metal atoms.
• The strength of an ionic bond is due to electrostatic attraction between positive and negative ions.