metallic

• • It is between two metals.
• • There are fixed positive ions present in the sea of delocalised electrons.
• • There is strong electrostatic force of attraction between fixed positive ions and delocalized electrons resulting in metallic bonding.
• Metals are malleable

  • Malleable means that the metals can be hammered into any shape.
  • Metals have layered structure and layers can slide past each other by hammering giving metals different shapes.
• Metals are ductile

  • Ductile means that the metals can be drawn into thin wires.
  • Metals have layered structure and layers can slide past each other by hammering giving metals a wire shape.
• Metallic Bonding

  • Atoms in a metal are arranged in a regular manner and vibrate about fixed positions.
  • The outermost electrons move freely, forming a ‘sea of electrons’ enveloping the positive metal ions.
• Metals are good conductors of electricity

  • Metals have delocalised electrons.
  • They are mobile and conduct electricity.
  • These mobile electrons or delocalised electrons conduct heat and electricity.
• Metals have high melting and boiling points

  • There is strong electrostatic force of attraction between fixed positive ions and delocalized electrons.
  • Large amount of energy is required to overcome strong electrostatic force of attraction.
• ALLOYS

  • Alloys are the mixture of metals with another metal or a non metal which make the metal stronger.
  • In metals the particles are arrranged in layers. There is a regular arrangement of fixed positive ions which can slide past each by applying pressure.
  • In alloys there is a mixture of metals with another metal or a non metals. Another metal being different in shape and size distort the regular arrangement of the metal lattice.
  • As a result the layers of the metal can no longer slide past each other making it strong