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Americium and Actinium Periodic Table


Actinium and Americium in Periodic Table


Periodic Table

Symbol
Am   
Ac   

Group Number
Not Available   
Not Available   

Period Number
7   
7   

Block
f block   
f block   

Element Family
Actinide   
Actinide   

CAS Number
7440359   
99+
7440348   
99+

Space Group Name
P63/mmc   
Fm_ 3m   

Space Group Number
194.00   
5
225.00   
2

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