Group 0 elements

• Group 0 Elements


  All Inert, Colourless Gases
• Group 0 elements


  • Helium
  • Neon
  • Argon
• Group 0 elements


  • Have eight electrons in their outer energy level, apart from helium which has two
  • Their outer shell is energetically stable so they don't need to give up or gain electrons to become more stable
  • They are more or less inert — they don't react with much at all
  • They exist as monatomic gases - single atoms not bonded to each other
  • All are colourless gases at room temperature
  • They are non-flammable — they won't set on fire
• Helium


  Only has electrons in the first shell, which only needs 2 to be filled
• As you move down the group of noble gases

  The boiling points increase along with increasing relative atomic mass
• Increase in boiling point

  Due to an increase in the number of electrons in each atom leading to greater intermolecular forces between them which need to be overcome
• Estimating boiling point of noble gas


  Given the boiling point of one noble gas, estimate the value for another one based on the pattern of increasing boiling point down the group
• Estimating boiling point of noble gas

  • Neon is a gas at 25°C, so helium must also be a gas at 25°C
  • Radon has a boiling point of -62°C and krypton has a boiling point of -153°C, so xenon should have a boiling point of about -108°C
• The actual boiling point of xenon is -108°C