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Francium and Protactinium Periodic Table


Protactinium and Francium in Periodic Table


Periodic Table

Symbol
Fr  
Pa  

Group Number
1  
17
3  
15

Period Number
7  
7  

Block
s block  
f block  

Element Family
Alkali  
Actinide  

CAS Number
7440735  
18
7440133  
99+

Space Group Name
-  
I4/mmm  

Space Group Number
225.00  
3
139.00  
11

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