atomic structure and bonding

• covalent network


  very high mp and np

  dose not conduct

  insoluble

  shares pairs of electrons
• covalent molecular


  low mp and bp

  dose not conduct

  insoluble

  shares pairs of electrons
• ionic lattice


  high mp and bp

  do not conduct as solid

  conduct as liquid or solution

  soluble

  transfers ions
• diatomic molecules

  hydrogen

  nitrogen

  fluorine

  oxygen

  iodine

  chlorine

  bromine