Atomic number:	65		Atomic weight:	158.92534
Shells:	2,8,18,27,8,2		Orbitals:	[Xe] 4f9 6s2
Melting point:	1356°C		Boiling point:	3230°C
Covalent radius:	1.59	Å	Atomic volume:	19.2	cm³/mol
Atomic radius:	2.51	Å	Ionic radius:	1.18 (+3)	Å
Electronegativity:	1.2		Oxidation states:	(3),4
1st ionization pot.:	5.8639	V	2nd ionization pot.:	11.525	V
3rd ionization pot.:	21.91	V	Specific heat:	0.18	J/gK
Heat of fusion:	10.80	kJ/mol	Heat of vapor.:	33.090	kJ/mol
Thermal conduct.:	0.111	W/cmK	Electrical conduct.:	0.00889	10^6/cm ohm
Density:	8.27	g/cm³	Valence:	3,4