Atomic number:	76		Atomic weight:	190.23
Shells:	2,8,18,32,14,2		Orbitals:	[Xe] 4f14 5d6 6s2
Melting point:	3054°C		Boiling point:	5027°C
Covalent radius:	1.26	Å	Atomic volume:	8.49	cm³/mol
Atomic radius:	1.92	Å	Ionic radius:	.63 (+4)	Å
Electronegativity:	2.2		Oxidation states:	2,3,(4),6,8
1st ionization pot.:	8.7	V	2nd ionization pot.:	--	V
3rd ionization pot.:	--	V	Specific heat:	0.13	J/gK
Heat of fusion:	31.80	kJ/mol	Heat of vapor.:	746.0	kJ/mol
Thermal conduct.:	0.876	W/cmK	Electrical conduct.:	0.109	10^6/cm ohm
Density:	22.40	g/cm³	Valence:	0,3,4,6,8