INTRODUCTION
Argon is an inert gaseous element and the third most prevalent gas in Earth's atmosphere.It’s name comes from the Greek word argos, 'inactive,' because it does not easily react with other elements.
Argon is composed of monatomic molecules and is colourless and odourless, constituting 0.93 percent of the atmosphere.
BASIC INFORMATIONS
- Atomic Number
- 18
- Atomic Mass
- 39.948
- Atomic radius
- 0.191
- Ionization energy
- 1521
- Electronic config
- 2,8,8
- Principal Valency
- N/A
- Density g/cm³
- 0.00116
- Melting point °C
- -189.35
- Boiling point °C
- -185.85
- Type of Element
- non-metal
- Electronegativity
- N/A
- Element Category
- Noble Gas
- Appearance
- Colourless Gas
- Block
- p-block
- Period
- 3
- Group
- 18
- No of Isotopes
- 24
- Occurrence
- Free Element
- Abundance in ppm
- 0.93% of atm
- Year of Discovery
- 1894
EXTRACTION
It is mostly obtain by fractional distillation of liquid air.
OXIDATION STATES
N/A
MAJOR SOURCE
Air
EXAMPLES OF COMPOUND PRESENT
Argon fluorohydride (HArF)
ECONOMIC IMPORTANCE
* Argon tubes require a lower voltage than neon tubes, and for this reason small amounts of argon are sometimes mixed with neon.
* Argon is also used in electric-arc technology,in gas lasers and in arc welding.
* It is used to fill Tungsten filament bulb as it is a poorer conductor of heat and so cools the filament less.
* It gives a blue light when it glow in a discharge tube.
