Bonding

Bonding

1. Ionic

   • definition: bond between a metal and a non metal
     • electrostatic attraction between opposite charges (+/-) formed as a result of electron transfer
     • positive ions (cations) and negative ions (anions)
       • giant lattice structure formed. For example, Sodium Chloride (NaCl)

2. Covalent

   • definition: electrostatic attraction of two nuclei with a shared pair of electrons
   • Macromolecular structures
     • many atoms joined together by very strong covalent bonds- e.g. diamond and graphite
   • Simple Molecules
     • weak intermolecular forces, however strong covalent bonds
       • determine melting and boiling point
   • Dative Covalent/ Co-ordinate Bond
     • definition: both of the shared electrons are from the same atom in a covalent bond

3. Metallic

   • definition: electrostatic attraction between positively charged metallic cations and delocalised electrons