Compare Element Properties

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Property	Th Thorium	? N/A
Atomic number	90	N/A
Symbol	Th	N/A
Name	Thorium	N/A
Category	actinide	N/A
Standard Atomic Weight	232.0377 u	N/A
Period	7	N/A
Group	N/A	N/A
Block	s	N/A
Phase at STP	solid	N/A
Electron configuration	[Rn]7s26d2	N/A
Oxidation states	[-1, 1, 2, 3, 4]	N/A
Electronegativity (Pauling)	1.3	N/A
Electron affinity	0.607 eV	N/A
Density	1.172000e+4 kg/m³	N/A
Melting point	1749.85 °C	N/A
Boiling point	4787.85 °C	N/A
Discovery year	1828	N/A