Argon element (Ar) is in group 18 and period 3 of a periodic table. Argon is in the p-block and it is classified as a noble gas element on the periodic table.
There is a lot more information related to argon which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Argon element (Information Table)
- Argon element in Periodic table
- Facts about Argon
- Properties of Argon
- Uses of Argon
Argon Element (Information Table)
The important data related to argon element is given in the table below.
|Appearance of argon||Colorless gas|
|Atomic number of argon||18|
|Symbol of argon||Ag|
|Atomic mass of argon||39.95 u|
|Protons, Neutrons & Electrons in argon||Protons: 18, Neutrons: 22, Electrons: 18|
|State of argon (at STP)||Gas|
|Group number of argon in periodic table||18|
|Period number of argon in periodic table||3|
|Block of argon in periodic table||p-block|
|Category of argon||Noble gas|
|Bohr model or Electrons per shell or Electrons arrangement in argon||2, 8, 8|
|Electron configuration of argon||[Ne] 3s2 3p6|
|Orbital diagram of argon|
|Valence electrons in argon||8|
|Atomic radius of argon (van der Waals radius)||188 picometers|
|Density of argon||1.79 g/L|
|1st ionization energy of argon||15.76 eV|
|Main isotope of argon||40Ar|
|Melting point of argon||83.81 K or -189.34 °C or -308.81 °F|
|Boiling point of argon||87.3 K or -185.84 °C or -302.52 °F|
|Crystal structure of argon||Face Centered Cubic (FCC)|
|Discovery of argon||By Lord Rayleigh and William Ramsay (in 1894)|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Argon element in Periodic table
The Argon element (Ar) has the atomic number 18 and is located in group 18 and period 3. Argon is a nonmetal and it is classified as a noble gas element.
Facts about argon
Here are a few interesting facts about argon element.
- The name “Argon” came from the Greek word “argos”, which means inactive.
- Initially the symbol of argon element was “A”, but it was changed to “Ar” by IUPAC in 1957.
- Argon is only 0.94% by volume in the earth’s atmosphere.
- Argon is the 3rd most abundant element present in the earth’s atmosphere.
- On the earth, the argon gas is prepared by the radioactive decay of potassium.
- Argon was the first noble gas to be discovered. Other noble gases were discovered after the discovery of argon gas.
- Argon remains closer to the earth’s surface, because it is denser than air.
Properties of argon
Here is a list of some physical properties and chemical properties of argon.
Physical properties of argon
- Argon is a colorless, odorless and tasteless gas.
- The argon gas glows with a violet light when it is ionized.
- Argon gas is 38% more denser than air.
- The melting point and boiling point of argon is -189.34 °C and -185.84 °C respectively.
- There are many isotopes of argon, but the most abundant isotope is 40Ar (which has an abundance of 99.6%).
Chemical properties of argon
- Argon is an inert gas and so it does not show any reaction with other elements.
- It has been found that the argon forms argon fluorohydride at the temperature below -256.15 °C.
Uses of argon
Here are some uses of the argon element.
- Argon is used as a shielding gas during various welding processes.
- Argon gas is used to preserve important historical documents, maps, etc. The argon gas prevents the paper or ink from degradation.
- Argon is inert gas and it cannot transfer heat through it. Because of this reason it is filled in double glazed windows between the two panes. This acts like thermal insulation.
- Argon is also used to store some chemicals which are very reactive to the atmospheric air.
- Argon is used in incandescent bulbs to prevent the filament from oxidation.
- Argon is also filled on the top of the wine bottles which prevents the contact of wine from oxygen.