38Ar Isotope Information and Examples of Enriched 38Ar Applications:

Argon-38 isotope (Ar-38 isotope, 38Ar isotope)

  • 38Ar isotope is used for as a tracer in geological dating;
  • 38Ar isotope is used for mass-spectrometer calibration;

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38Ar gas Safety Data Sheet (SDS) - Download pdf file
Download 38Ar gas SDS

Properties Of 38Ar Isotope:

Neutron Number (N)20
Atomic Number / Proton Number (Z)18
Mass Number / Nucleon Number (A)38
Natural Abundance (%)0.000629
Atomic Mass (Da)37.962732
Relative Isotopic Mass37.962732
Quadrupole Moment0
g-factor (g value)0
Electron Configuration Blockp
Melting Point (K)83.8
Boiling Point (K)87.3
Specific Heat0.138
Heat of Formation
Thermal Conductivity0.0177
Dipole Polarizability 11.083
Electron Affinity (kJ/mole)-11.5
Electronegativity (Pauling scale)
Atomic Radius (pm)
Covalent Radius (pm)
VDW Radius (pm)199
Lattice Constant5.26
Crystal StructureFCC
Jmol color#80d1e3

Argon Information

Monatomic noble gas. Makes up 0.93% of the air. Colourless, odorless. Is inert and has no true compounds. Lord Rayleigh and Sir william Ramsey identified argon in 1894.

Used in lighting products. It is often used in filling incandescent light bulbs. Some is mixed with krypton in fluorescent lamps. Crystals in the semiconductor industry are grown in argon atmospheres.

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