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Promethium
Promethium

Roentgenium
Roentgenium



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Promethium
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Roentgenium

Promethium and Roentgenium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Pm
3
6
f block
Lanthanide
7440122
-
194.00
 
Rg
11
7
d block
-
54386242
-
194.00