group 0

• What is the electronic structure of noble gases?

  They have a full outer energy level
• Why are group zero elements unreactive?

  They have a full outer energy level
• How many electrons does helium have?

  Two electrons
• How many electrons can the first energy level hold?

  A maximum of two electrons
• Why are helium atoms stable?

  They have a full outer energy level
• How many electrons does neon have?

  Ten electrons
• How many electrons are in the first and second energy levels of neon?

  Two in the first, eight in the second
• Why is neon unreactive?

  It has a full outer energy level
• How many electrons does argon have in its outer energy level?

  Eight electrons
• Why is argon unreactive?

  It has a full outer energy level
• What is the key fact about all noble gases?

  • All noble gases have a full outer energy level
  • This makes them unreactive
• What is the boiling point of noble gases compared to room temperature?

  All are lower than room temperature
• How do the boiling points of noble gases vary down the group?

  They increase as relative atomic mass increases
• What is the relative atomic mass of helium?

  Four
• What is the relative atomic mass of radon?

  222
• Which noble gas has the highest boiling point?

  Radon
• What is the boiling point trend among noble gases?

  Increases down the group
• What are the key characteristics of noble gases?

  • Full outer energy levels
  • Unreactive nature
  • Low boiling points
  • Boiling points increase down the group