Mendeleev's Periodic Table > Ne - Neon

Ne - Neon

This inert gas is well known for its orange light seen in 'neon signs'. Neon (as well as krypton, xenon and radon.) was extracted by William Ramsey and M. W. Travers from liquid air in 1898 in London. It is a very inert element. Neon forms an unstable hydrate. In a vacuum discharge tube, neon glows reddish orange. Of all the rare gases, the discharge of neon is the most intense at ordinary voltages and currents. It is present in the atmosphere as 1 part in 65000. Liquid neon has over 40 times more refrigerating capacity than liquid helium, and more than 3 times that of liquid hydrogen.

Atomic number	-	10		Density	g/mL	0	.000901
Atomic weight	u	20	.179	Melting point	K	24	.553
Bonding radius	A	0	.71	Boiling point	K	27	.096
Atomic radius	A	0	.51	Heat of vaporization	kJ/mol	1	.7326
Ionization Potential	V	21	.564	Heat of fusion	kJ/mol	0	.3317
Electronegativity	-	-		Specific heat	J/gK	0	.904
The oxide is unknown.				Crystal are face centered cubic.
Electron config. : 1s² 2s² 2p⁶

Isotopes of Ne (Neon):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	016 122KEV p,10.539 MeV F-15 16.025753	017 109.2 msec EC/ECa/ECp,14.530 F-17/N-13/O-16 17.017702	018 1672 msec EC,4.446 MeV F-18 18.005710	019 17.22 sec EC,3.238 MeV F-19 19.001879
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	020 90.48% Stable 19.992440	021 0.27% Stable 20.993846	022 9.25% Stable 21.991385	023 37.24 sec B-,4.376 MeV Na-23 22.994467
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	024 3.38 min B-,2.470 MeV Na-24 23.993614	025 602 msec B-,7.300 MeV Na-25 24.997788	026 0.23 sec B-,7.330 MeV Na-26 26.000461	027 32 msec B-/B-n,12.670 Na-27/Na-26 27.007611
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	028 14 msec B-/B-n,8.790 Na-28/Na-27 28.012109	029 0.2 sec B-n,12.310 Na-28 29.019323

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