- Definition of Ar
Ar (Argon) is a chemical element in the periodic table with the symbol Ar and an atomic number of 18. It is an element of the noble gases group. The atomic mass of Ar is 39.948 amu. An Ar molecule is simple, consisting of one Ar atom. Ar does not form ions under normal conditions due to its inert nature.
- Properties of Ar
2.1 Physical properties of Ar
Ar is a colorless, odorless and tasteless gas. The pH of Ar cannot be determined as Ar does not react with water.
2.2 Chemical properties of Ar
Ar is completely inert in normal chemical reactions. However, under extremely harsh conditions, Ar can form some complex compounds such as ArF and ArH+.
- Common chemical equations of Ar
As Ar is an inert gas, it does not participate in normal chemical reactions with metals, acids, non-metals, or salts.
- Preparation of Ar
4.1 Laboratory preparation of Ar
In the laboratory, Ar is usually not prepared due to its difficulty and unnecessary nature.
4.2 Industrial preparation of Ar
In industry, Ar is produced as a by-product of the air refining process through distillation.