Elements

• Forms of carbon


  • diamond
  • graphite
  • fullerene
• Metallic bonding


  A lattice of positively charged ions in a sea of delocalised electrons
• Bonding in boron


  covalent network
• Elements from the first 20 that form discrete covalent solids


  • sulphur
  • phosphorus
• Elements from the first 20 that are monatomic


  • helium
  • neon
  • argon
• Elements from the first 20 that form discrete covalent gases

  • nitrogen
  • oxygen
  • hydrogen
  • fluorine
  • chlorine
• Elements from the first 20 that form metallic bonds


  • Li
  • Be
  • Na
  • Mg
  • Al
  • K
  • Ca
• Elements from the first 20 that form covalent networks

  • boron
  • carbon
  • silicon
• Weak bonds between discrete molecules

  London dispersion forces
• Covalent network

  A giant lattice of covalently bonded atoms
• Discrete covalent molecular structure

  A molecule with a set no. of atoms with London dispersion forces between the molecules
• Monatomic substance


  Made of discrete or separate atoms with only weak London dispersion forces between atoms