The Noble Gases
Known as “The Noble Gases”
The unreactive elements: Helium, neon, argon,
krypton, xenon and radon
Exist as single atoms instead of diatomic
Rarely combine with other elements
Colorless Helium remains liquid until
Oderless Divers and other people working
Tasteless under pressure use a mixture of
helium and oxygen
Non toxic used for filling balloons and
Most abundant gas in blimps.
the universe Manhattan Project scientists
used helium to make the atomic
mixed with oxygen, in asthma
treatment because it diffuses
very easily through the lungs
Sir William Ramsay discovered • gives a distinct reddish glow
neon shortly after the element when used in vacuum discharge
krypton in 1898. tubes and neon lamps.
• highly inert • Neon and helium together are
• forms no known compounds used to make gas lasers.
Largest use for neon is in • Functions in high voltage
advertising signs indicators.
All noble gases produce a color
Neon- red orange
• Greek meaning “inactive” due used to fill incandescent and
to it’s inactivity fluorescent light bulbs to
prevent oxygen from
• Discovered in 1894 corroding the hot filament.
• full outer shell makes it stable forms inert atmospheres for
and resistant to bonding with arc welding and growing
other elements. semiconductor crystals.
dating rocks with a process
Discovered by William Ramsey
Illuminate strips at
Greek wording meaning “hidden”.
Inert gas Used with nitrogen in
isolated from the air fluorescent light
by liquefaction as bulbs so gases will
the other noble not burnout.
gases Used in lighting and
Discovered by William Strobe lights
once in photographic
is the rarest of the stable
noble gases in the air.
The first noble gas General anesthetic
produced by Neil Bartlett
xenon, platinum and
Radioactive gas Uranium decays in rocks and
potential health hazard Breathing in for a long amount
in some homes of time can cause cancer
Radon is found in
where it is produced by
uranium and radium