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Actinium and Protactinium Periodic Table


Protactinium and Actinium in Periodic Table


Periodic Table

Symbol
Ac  
Pa  

Group Number
3  
15
3  
15

Period Number
7  
7  

Block
f block  
f block  

Element Family
Actinide  
Actinide  

CAS Number
7440348  
99+
7440133  
99+

Space Group Name
Fm_ 3m  
I4/mmm  

Space Group Number
225.00  
3
139.00  
11

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Actinide Series

Actinide Series

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