Group 0

• What is the electronic structure of noble gases?

  They have full outer energy levels.
• Why are group zero elements considered unreactive?

  Because they have full outer energy levels, making them stable.
• What is the significance of the full outer energy level in noble gases?

  • Atoms are stable with a full outer energy level
  • Full outer energy levels lead to unreactivity
• What is the first noble gas mentioned?

  Helium
• How many electrons does helium have?

  Two electrons
• Why is helium considered stable?

  Because its first energy level is full.
• How many electrons does neon have?

  Ten electrons
• Why is neon considered unreactive?

  Because it has a full outer energy level.
• How many electrons are in the outer energy level of argon?

  Eight electrons
• Why is argon unreactive?

  Because it has a full outer energy level.
• What trend is observed in the boiling points of noble gases as you move down the group?

  • Boiling points increase as relative atomic mass increases
  • All noble gases have boiling points lower than room temperature
• What is the boiling point of helium compared to room temperature?

  Lower than room temperature
• Which noble gas has the highest boiling point?

  Radon
• What is the relative atomic mass of helium?

  Four
• What is the relative atomic mass of radon?

  222