Comparison of Hydrogen and Neon

Attribute	Neon ×	Hydrogen ×
Atomic mass (u)	20.18	1.008
Standard state	Gas	Gas
Oxidation states	0	-1 +1
Electron configuration	[He]2s²2p⁶	1s¹
Atomic radius (van der waals) (pm)	154	120
Electronegativity (pauling scale)	-	2.2
Electron affinity (eV)	-	0.754
Ionization energy (eV)	21.565	13.598
Boiling point (K)	27.07	20.28
Melting point (K)	24.56	13.81
Density (g/cm³)	0.0008999	8.988E-5
Atomic number	10	1
Group name	Noble gas	Nonmetal
Symbol	Ne	H
Discovered (year)	1898	1766