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Actinium and Chromium Periodic Table


Chromium and Actinium in Periodic Table


Periodic Table

Symbol
Ac   
Cr   

Group Number
Not Available   
6   
12

Period Number
7   
4   

Block
f block   
d block   

Element Family
Actinide   
Transition Metal   

CAS Number
7440348   
99+
7440473   
39

Space Group Name
Fm_ 3m   
Im_ 3m   

Space Group Number
225.00   
2
229.00   
1

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