In 1961, the Commission recommended Ar(Ne) = 20.183 based on gas-density measurements. At that time, the only reported measurements by mass spectrometry ...

Atomic Weights and Isotopic Compositions for Neon. Isotope · Relative Atomic Mass · Isotopic · Composition · Standard Atomic Weight · Notes. 10, Ne, 20, 19.992 ...

Atomic Mass, 20.1797 atomic mass units ; Number of Protons, 10 ; Number of Neutrons, 10 ; Number of Electrons, 10 ; Melting Point, -248.6° C.

Neon ; Atomic Mass, 20.180 u ; Electron Configuration, [He]2s22p ; Oxidation States, 0 ; Year Discovered, 1898 ; Atomic Mass, 20.180 u.

Neon ; colorless gas exhibiting an orange-red glow when placed in an electric field · 20.1797±0.0006 · 20.180±0.001 (abridged).

The atomic mass of neon is 20 . 18 u .