01 Introduction to Chemistry
02 Matter and the Atomic Structure
03 The Mole Concept, Chemical Formula and Equation
04 The Periodic Table of Elements
05 Chemical Bond
06 Acids, Bases and Salts
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5.6.1 Metallic Bond

  1. Metal atoms are arranged closely packed and orderly in the solid state. Valence electrons of metal atoms can be donated easily and delocalised.
  2. When valence electrons are delocalised, metal ions that are positively-charged are formed.
  3. All delocalised valence electrons move freely between the metallic structure and form a sea of electrons.
  4. The electrostatic force of attraction between the sea of electrons and the positively charged metal ions form the metallic bond.
    Formation of metallic bond
  5. Metals can conduct electricity due to the free-moving electrons which are delocalised in the sea of electrons.
  6. The electrons that move freely in the metallic structure carry the charges from the negative terminal to the positive terminal when electricity is supplied.
    Electrical conductivity of metals