Noble Gases

Elements

• Helium
• Neon
• Argon
• Xenon
• Radon

interesting facts

• The elements in this group are highly non-reactive.
• They have a lot of electrons.
• They are all odorless and colorless.

examples

• Helium is used to inflate balloons at theme parks.
• Largest thing liquid helium is used for is to keep electrical components cool.
• Neon is used in light fixtures.

Helium

physical characteristics

• Helium is colorless.
• Helium is odrless.
• Helium is less soluble in water than other gases.

Helium

• Atomic number: 2
• Atomic mass: 4
• Nonmetal
• Density: 0.178*10 -3 g.cm -3 at 20 °C; float

Helium in the real world

• Helium is used to make balloons float in the air.
• Helium is also used in neon lights alongside neon gas.
• Helium is used in lasers.

3 interesting facts

• A man walks into a bar and orders a drink. The bartender replies, "Sorry, but we don't serve noble gases here." "He" doesn't react.
• When inhaled, helium will alter a person's voice.
• Helium was once used to cool superconductors of a hover board for a car commercial.

2 histroical facts