Group 0 (Noble gases)

• How do you know if an element is a noble gas?

  Full outer shell.
• Why are noble gases inert?

  They don't react because they have a full outer shell of electrons so they don't need anymore.
• What are the properties of noble gases?

  -low melting and boiling point increase down the group.

  -density increases down the group.

  -monatomic (single molecule).
• What are the elements in group 0?

  Neon, argon, krypton, xenon and radon
• How do noble gases have everyday uses?

  Helium- airships and party balloons. Has a lower density than air

  Argon- filament lamps. non-flammable.