Element Thorium (Th)

Atomic number 90 · actinide · Atomic mass 232.04 u

Atomic Mass
232.0400 u
Element Properties
Atomic Number 90
Atomic Mass 232.0400 u
Category actinide / 锕系元素
Group
Period 7
Block F
Electron Configuration [Rn] 6d² 7s²
Electronegativity (Pauling) 1.3
Phase at STP Solid
Density 11.724 g/cm³
Year Discovered 1828

Explore all 118 elements or calculate molar mass of any compound

Periodic Table → Molar Mass Calculator →
← Back to Periodic Table