Thorium and Thallium Periodic Table
Periodic Table
Symbol
Th
Tl
Group Number
0
18
13
5
Period Number
7
6
Block
f block
p block
Element Family
Actinide
Post-Transition
CAS Number
7440326
99+
7440280
99+
Space Group Name
P63/mmc
P63/mmc
Space Group Number
194.00
5
194.00
5
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