Group 8 gases

• group 8 gases are called Noble Gas
• All Gases
• all unreactive (reactivity)
• Do not react to form compounds
• All have full outter shell
• Group 8:

  1. He - helium
  2. Ne - neon
  3. Ar - argon
  4. Kr - krypton
• Going down the size of atom increases
• Going down the boiling and melting point increases