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Protactinium and Polonium Periodic Table


Polonium and Protactinium in Periodic Table


Periodic Table

Symbol
Pa   
Po   

Group Number
Not Available   
16   
2

Period Number
7   
6   

Block
f block   
p block   

Element Family
Actinide   
Post-​Transition   

CAS Number
7440133   
99+
7440086   
99+

Space Group Name
I4/mmm   
Pm-3m   

Space Group Number
139.00   
8
221.00   
3

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