Comparison of Oxygen and Xenon

Attribute	Xenon ×	Oxygen ×
Atomic mass (u)	131.29	15.999
Standard state	Gas	Gas
Oxidation states	0	-2
Electron configuration	[Kr]5s²4d¹⁰5p⁶	[He]2s²2p⁴
Atomic radius (van der waals) (pm)	216	152
Electronegativity (pauling scale)	2.6	3.44
Electron affinity (eV)	-	1.461
Ionization energy (eV)	12.13	13.618
Boiling point (K)	165.03	90.2
Melting point (K)	161.36	54.36
Density (g/cm³)	0.005887	0.001429
Atomic number	54	8
Group name	Noble gas	Nonmetal
Symbol	Xe	O
Discovered (year)	1898	1774