Comparison of Helium and Nitrogen

Attribute	Nitrogen ×	Helium ×
Electronegativity (pauling scale)	3.04	-
Atomic mass (u)	14.007	4.0026
Standard state	Gas	Gas
Oxidation states	-3 -2 -1 +1 +2 +3 +4 +5	0
Electron configuration	[He]2s²2p³	1s²
Ionization energy (eV)	14.534	24.587
Atomic radius (van der waals) (pm)	155	140
Boiling point (K)	77.36	4.22
Melting point (K)	63.15	0.95
Density (g/cm³)	0.0012506	0.0001785
Atomic number	7	2
Group name	Nonmetal	Noble gas
Discovered (year)	1772	1868
Symbol	N	He