Thorium: Properties
Element
Name
: Thorium
Atomic Number
: 90
Chemical Symbol
: Th
Electronic Configuration
: [Rn]6d
2
7s
2
Abundance
:
Earth
: 2.4 ppm
Solar System
: 2 (rel. to [H]=1x10
12
)
Ocurrence
Euxenite
(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
2
O
6
Monazite
(Ce,La,Th).PO
4
Sartorite
PbAs
2
S
4
Thorianite
ThO
2
Xenotime
YPO
4
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