Chemical Bonding

• Covalent bond


  a sharing of at least one pair of electrons by two atoms
• Ionic bonding


  a transfer of electrons to form cations

  and anions which are electrostatically attracted in an ionic crystal lattice
• Metallic bonding 


  the attraction between positive kernels

  and a sea of delocalised electrons
• intermolecular force


  is a force of attraction between molecules or between atoms of noble gases
• Polar molecule 


  a molecule in which the electrons are unevenly distributed resulting in a S+ and S− end