Template:Infobox neon

fluorine ← neon → sodium He ↑ Ne ↓ Ar 10Ne Periodic table
Appearance
Colorless gas exhibiting an orange-red glow when placed in a high voltage electric field Neon gas in a discharge tube, so-called neon light. Spectral lines of neon in the visible region
General properties
Name, symbol, number	neon, Ne, 10
Pronunciation	/ˈniːɒn/
Element category	noble gases
Group, period, block	18, 2, p
Standard atomic weight	20.1797(6)
Electron configuration	1s2 2s2 2p6
Electrons per shell	2, 8 (Image)
Physical properties
Phase	gas
Density	(0 °C, 101.325 kPa) 0.9002 g/L
Liquid density at b.p.	1.207 g·cm−3
Melting point	24.56 K, -248.59 °C, -415.46 °F
Boiling point	27.07 K, -246.08 °C, -410.94 °F
Triple point	24.5561 K (-249°C), 43 kPa
Critical point	44.4 K, 2.76 MPa
Heat of fusion	0.335 kJ·mol−1
Heat of vaporization	1.71 kJ·mol−1
Molar heat capacity	5R/2 = 20.786 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 12 13 15 18 21 27
Atomic properties
Oxidation states	no data
Ionization energies (more)	1st: 2080.7 kJ·mol−1
	2nd: 3952.3 kJ·mol−1
	3rd: 6122 kJ·mol−1
Covalent radius	58 pm
Van der Waals radius	154 pm
Miscellanea
Crystal structure	face-centered cubic
Magnetic ordering	diamagnetic
Thermal conductivity	49.1x10-3  W·m−1·K−1
Speed of sound	(gas, 0 °C) 435 m·s−1
Bulk modulus	654 GPa
CAS registry number	7440-01-9
Most stable isotopes
Main article: Isotopes of neon
iso NA half-life DM DE (MeV) DP 20Ne 90.48% 20Ne is stable with 10 neutrons 21Ne 0.27% 21Ne is stable with 11 neutrons 22Ne 9.25% 22Ne is stable with 12 neutrons

References

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