Atomic number:	82		Atomic weight:	207.2
Shells:	2,8,18,32,18,4		Orbitals:	[Xe] 4f14 5d10 6s2 6p2
Melting point:	327.502°C		Boiling point:	1740°C
Covalent radius:	1.47	Å	Atomic volume:	18.17	cm³/mol
Atomic radius:	1.81	Å	Ionic radius:	1.19 (+2)	Å
Electronegativity:	2.33		Oxidation states:	4,(2)
1st ionization pot.:	7.4167	V	2nd ionization pot.:	15.028	V
3rd ionization pot.:	31.943	V	Specific heat:	0.13	J/gK
Heat of fusion:	4.799	kJ/mol	Heat of vapor.:	177.70	kJ/mol
Thermal conduct.:	0.353	W/cmK	Electrical conduct.:	0.0481	10^6/cm ohm
Density:	11.34	g/cm³	Valence:	2,4