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Promethium and Erbium Periodic Table


Erbium and Promethium in Periodic Table


Periodic Table

Symbol
Pm   
Er   

Group Number
Not Available   
Not Available   

Period Number
6   
6   

Block
f block   
f block   

Element Family
Lanthanide   
Lanthanide   

CAS Number
7440122   
99+
7440520   
35

Space Group Name
Not Available   
P63/mmc   

Space Group Number
Not Available   
194.00   
5

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