Comparison of Tellurium and Polonium

Attribute	Tellurium ×	Polonium ×
Atomic mass (u)	127.6	208.98243
Standard state	Solid	Solid
Oxidation states	-2 +4 +6	+2 +4
Electron configuration	[Kr]5s²4d¹⁰5p⁴	[Xe]6s²4f¹⁴5d¹⁰6p⁴
Atomic radius (van der waals) (pm)	206	197
Electronegativity (pauling scale)	2.1	2
Electron affinity (eV)	1.971	1.9
Ionization energy (eV)	9.01	8.417
Boiling point (K)	1261	1235
Melting point (K)	722.66	527
Density (g/cm³)	6.232	9.32
Atomic number	52	84
Group name	Metalloid	Metalloid
Discovered (year)	1782	1898
Symbol	Te	Po