Noble Gases

Physical Properties

• Colourless
• Low melting/boiling points
• Poor conductors - no delocalised electrons

Chemical Properties

• Each noble gas has a full outer shell
• This means they do not need to gain or lose electrons when they react
• This makes them stable and unreactive/inert

Trend

• As you go down the group, the boiling/melting point gets higher
• As you go down the group, the density gets higher

Uses of Noble Gases

Helium

• Transport, e.g., balloons
• This is because it is low density and inert

Neon

• Billboards
• When electricity is ran through it, it will jump a shell and return a release of energy in form of light

Argon

• Stores materials thats prone to oxidation
• This is because it is denser than air

Krypton

• Fluorescent lighting
• Greatly unreactive which increases it's lifespan, same function as neon