Group 0

• What are the elements in group 0 called?

  Noble gases
• Why are noble gases unreactive?

  They have full outer shell of electrons
• Why do the noble gases not easily form molecules?


  Their atoms have stable arrangements of electrons
• How many electrons do noble gases have in their outer shell?


  8
• What are the boiling points like of group 0 as you go down the group?


  Increase
• Why do the boiling points increase down group 0?


  • The atoms get bigger as you go down.
  • Bigger atoms have more electrons which makes the intermolecular forces stronger
  • This requires more energy to overcome these forces, boiling points are higher