Trends with metals

• Atoms can be joined together in 3 possible ways:

  • Ionic bonding
  • Covalent bonding
  • Metallic bonding

  All three types involve changes in the electrons in the

  outermost electron shells of the atoms
• MELTING AND BOILING POINTS OF METALS:

  
  

  Metals usually have high melting point and boiling points

  Lot of energy required to break the strong metallic bond in the giant metallic
• Heat Conductivity OF METALS:

  As metal atoms are closely packed, heat energy can be easily transferred from one atom to another by vibrations
• Ductility and Malleability OF METALS:

  
  

  The layers of atoms in metal are hard to pull apart because of the electrons holding them together, hence metals are tough. But

  individual atoms are not held to any other specific atoms,

  hence atoms slip easily past one another.

  
  

  Metals are malleable. This means that they can be hammered or pressed into different shapes without breaking.

  
  

  They are also ductile, which means that they can be drawn out into thin wires without breaking.
• Electrical conductivity:

  Metals are good electrical conductor

  Since electrons in the sea of electrons are mobile, metals can conduct

  electricity when solid or MOLTEN