Ionic bonding: Bonding structure and the properties of matter: Chemistry: GCSE (9:1)

• Formation of metal ions

  Atoms lose outer electrons
• Metals

  Elements that form positive ions
• Formation of non-metal ions

  Atoms gain electrons
• Charge on non-metal ions

  negative
• Group 1 ions charge

  +1

  
• Group 2 ions charge

  +2

  
• Group 6 ions charge

  -2

  
• Group 7 ions charge

  -1

  
• Electron structure of ions


  Same as the nearest noble gas

  
• Giant structure


  A huge 3D network of atoms or ions
• lattice


  Regular arrangement of particles.

  
• Giant ionic lattice


  A huge, 3D, regular structure of oppositely charged ions, held together by electrostatic forces.

  
• Examples of Ionic compounds

  NaCl, MgO
• Limitations of dot and cross diagram


  Looks like the compound only contains a few ions

  
• Limitations of a dot and stick diagram


  Looks like each ion is only attracted to a few other ions

  
• Limitations of a 3D diagram


  Looks like it only contains a few ions

  
• Ionic formula


  the simplest whole number ratio of the ions in a giant ionic lattice