1. Mike Mattei Dan Hempsey Dana Lynch
The Noble Gases
Mike Mattei
Dan Hempsey
Dana Lynch

2. Group 18 Known as “The Noble Gases”
The unreactive elements: Helium, neon, argon, krypton, xenon and radon
Exist as single atoms instead of diatomic molecules
Rarely combine with other elements

3. Helium atomic HE #2 Colorless Oderless Tasteless Non toxic
Most abundant gas in the universe
Helium remains liquid until absolute zero
Divers and other people working under pressure use a mixture of helium and oxygen
used for filling balloons and blimps.
Manhattan Project scientists used helium to make the atomic bomb
mixed with oxygen, in asthma treatment because it diffuses very easily through the lungs

4. Neon atomic NE #10
Sir William Ramsay discovered neon shortly after the element krypton in 1898.
highly inert
forms no known compounds
Largest use for neon is in advertising signs
All noble gases produce a color
Helium- yellow
Neon- red orange
Aragon- violet
gives a distinct reddish glow when used in vacuum discharge tubes and neon lamps.
Neon and helium together are used to make gas lasers.
Functions in high voltage indicators.

5. Argon atomic AR #18 Greek meaning “inactive” due to it’s inactivity
Discovered in 1894
full outer shell makes it stable and resistant to bonding with other elements.
used to fill incandescent and fluorescent light bulbs to prevent oxygen from corroding the hot filament.
forms inert atmospheres for arc welding and growing semiconductor crystals.
dating rocks with a process called Potassium-Argon dating

6. Krypton atomic KR #36 Illuminate strips at airports
Discovered by William Ramsey
Greek wording meaning “hidden”.
White
Inert gas
isolated from the air by liquefaction as the other noble gases
Illuminate strips at airports
Used with nitrogen in fluorescent light bulbs so gases will not burnout.
Used in lighting and photography

7. Xenon atomic XE #54 Strobe lights once in photographic flash cubes
Discovered by William Ramsey
is the rarest of the stable noble gases in the air.
The first noble gas compound was produced by Neil Bartlett in 1964
xenon, platinum and fluorine.
Strobe lights
once in photographic flash cubes
General anesthetic

8. Radon atomic RN #86 Radioactive gas
potential health hazard in some homes
Radon is found in underground deposits where it is produced by uranium and radium decay.
Uranium decays in rocks and oils
Breathing in for a long amount of time can cause cancer