Atomic Number 18

Atomic Number 18 is belong to element of Argon.

Chemical symbol for Argon is Ar. Number of protons in Argon is 18. Atomic weight of Argon is 39.948 u or g/mol.


Atomic Number 18 Element Properties

Atomic Number (Z)18
Atomic SymbolAr
Element NameArgon
Atomic Weight39.948 u
Density0.0017837 g/cm3
Melting Point (K)83.8 K
Boiling Point (K)87.3 K

List all properties of Argon