Atomic number:	45		Atomic weight:	102.90550
Shells:	2,8,18,16,1		Orbitals:	[Kr] 4d8 5s1
Melting point:	1966°C ±3°C		Boiling point:	3695°C
Covalent radius:	1.25	Å	Atomic volume:	8.3	cm³/mol
Atomic radius:	1.83	Å	Ionic radius:	.67 (+3)	Å
Electronegativity:	2.28		Oxidation states:	2,(3),4
1st ionization pot.:	7.4589	V	2nd ionization pot.:	18.08	V
3rd ionization pot.:	31.06	V	Specific heat:	0.242	J/gK
Heat of fusion:	21.50	kJ/mol	Heat of vapor.:	493.0	kJ/mol
Thermal conduct.:	1.50	W/cmK	Electrical conduct.:	0.211	10^6/cm ohm
Density:	12.4	g/cm³	Valence:	2,3,4,5,6