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Radium
Radium

Thallium
Thallium



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Thallium

Radium and Thallium Periodic Table

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Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Ra
2
7
s block
Alkaline Earth
7440144
Im_ 3m
229.00
 
Tl
13
6
p block
Post-​Transition
7440280
P63/mmc
194.00