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Argon

Published on Dec 06, 2016

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PRESENTATION OUTLINE

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COMES FROM GREEK ARGOS MEANING WORTHLESS

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Colorless, odorless, tasteless
when placed in electric current it exhibits a lilac glow

Photo by mightyohm

Supernova remnant, 50k light years from earth

Lord Rayleigh and Sir William Ramsay

Discovered ARgon in 1894

Wow

ARgon is sometimes used to cool the heads of nuclear warheads

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  • Density: 0.0017837 G/CCM
  • Atomic radius: 71 pm
  • Current Cost: 50 cents/100 gs
  • Common isotopes: 36Ar, 38Ar, 40Ar

Used when an inert atmosphere is needed. Used in production of titanium and other reactive elements. It is used by welders to protect the weld area and in incandescent light bulbs to stop oxygen from corroding the filament.

Used in fluorescent tubes and low-energy light bulbs. A low-energy light bulb often contains argon gas and mercury. When it is switched on an electric discharge passes through the gas, generating UV light. The coating on the inside surface of the bulb is activated by the UV light and it glows brightly.

Chemical properties:


Chemically inactive
argon fluorohydride (HArF), discovered in 2000. Does nothing

Physical properties:

Gas at room temperature
Unresponsive

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  • Melting Point: -308.83°F, 189.35°C, 462.5K
  • Boiling Point: -302.5°F, -185.8°C, 458.95K
  • Ionization energy: 15.760 eV

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  • Makes up 0.93% of Earth's atmosphere
  • Third most abundment gas
  • obtained from the air as a byproduct of the production of oxygen and nitrogen.
Photo by FlyingSinger

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  • Electron configuration: Ne 3s2 3p6
  • Electronegativity: 3.2

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Photo by mightyohm

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